Unwanted dog sex

This is a true story and I will try to explain everything in the most detail as possible.

So it all started when I was 16. I'm male and straight. I have never been in animal sex at all and never again since the accident occurred.

So a friend of mine had a male Rottweiler he just called him Rottie who was around 3 or 4 years old. I really liked the dog. We were always playing when I met up with my friend. Sometimes playful fighting and stuff. My parents never wanted to get me a dog either. So it was a pleasure for me to see the dog. So as you may know male dogs also hump. so it appeared that here and there he tried to hump me and friend too. It was funny when it happened because both me and my friends where also making jokes of each other afterwards.

So after a stressful school year we finally reached summer holidays and my friend was going on a trip with his family while I was staying home with my parents this year. It was no question that I would take the dog. After long discussions with my parents I went to my friend's house picked up the food supplies for 2 weeks and all the other dog stuff and took the dog with me.

It was literally the same day when the accident happened. I took the dog for a walk right after I stored his stuff and prepared his food. We went to the park and as I said before played a little bit rough. I stole his toy ball and while he pushed me down into the ground and I got really dirty. He also tried to hump me but it didn't meant anything to me since I was clothed and could get up easily. I'm not weak so I could push the dog away. Otherwise it would be stupid to look over a Rottweiler.
So we went back home and I decided to take a shower after I gave Rottie some water and food. We went out for hours and when we came back around 18 o clock my parents had left a note they would be gone the whole evening like until midnight because the wanted to see a movie.
So I came back out of the shower, dried myself and put the towel back to his hook on the wall and went into my room to get back dressed. I was completely naked. Rottie was sitting there on his blanked and it seemed that he was very tired. So I went around the room getting my clothes together, which I had thrown around when I undressed and was looking for my short when I remembered I kicked them below the bed.
Still naked I went down the bed. I have to say that it was really tight so that I barely fit down there and while I was stretching all the way to catch my short I had my hips raised up and pressed against the bed. I could have just completely laid down but I thought I would get up straight away, which did not happen.

So this is the final position. Me laying under the bed, squeezed thight and my hips up. My ass completely exposed....and Rottie was up again.

What happened next was like a bad dream. Rottie came up to me to hump. And it went so fast I couldn't even realize what happened until it was done.
Even though I could handle Rotties strengths normally, pressed like this under the bed I was not able to push him back easily. And also my first reaction was to get away not get CLOSER. And there was only one way out by pushing against him.

So what happened... Rottie mounted me and started to hump. Pressing my ass tight to the bed so I could not escape by laying down. I felt his hard cook raming against my butt. When we were playing and he did that his penis never went out but this time it did. He started immediately to ejaculated and he would continue the whole time - I could feel it the second hump running down my butthole and even before I could say something - Bump! He hit my hole...barely lubricated from his ejaculation but enough to slip him in I felt an immense pain going up my ass. I screamed while he was thrusting brutally in me. It was hot I can tell you. Not hot like horny but heat. His dick was hot and I could feel his cum like some sort of warm wetness filling up my butthole. This was just two thrusts in when, beside the unbearable pain something inside me started to swell up to an immense size.
Since I never had been into butt play and still was a virgin the swelling stretched my ass to his maximum. Even if I had a chance to escape from below the bed, at this point it was not possible to escape the sex anymore.

He was thrusting and Cumming like this for like 30 seconds, me full of pain and screaming when out of nowhere I started to get a boner. His knot and dick was pressing on my prostate from inside forcing my dick to get rock solid. And it took just one or two thrusts more while I was hard as shit when the pain in my ass started to get overwhelmed by pleasure. I didn't know what was happening, I couldn't resist, wanted to flee the pain but now it was giving me also unbelievable pleasure. It took me to this point by around 1 minute of rotties hard cook pounding inside me. The pleasure built up really fast it was hurtful but I could feel myself getting even tighter and an amazing feeling of orgasm going from my butthole through my whole body. It was like a tingling itchy feeling that got stronger with my inner buttwalls getting harder while you try to squeeze the dogs knot and penise to scratch it. But also there was no real squeezing. I was filled up and stretched completely with his genitals. It was an build up to an build up. At this point some people write stuff like, they tried to stop the orgasm or tried not to cum. But there is no way in my situation that I would have had any thoughts like this. I was just a body. Not a thinking human being. Just a body and only the orgasm and the pain were in my head. I wanted to finish it but not just because of the pain but also all my instincts wanted the orgasm. I was way over the edge but had not cum yet.
And then there was it - he hit the spot. He pounded me roughless but he also hit the right spot on the prostate. You must understand that the prostate is like the g spot of males. If you push and stimulate this spot you will cum! It's an mechanical thing. Push it and cum. Every man can have a prostate orgasm but only when you do it right. And rottie hit right, he rubbed the spot with every thrust of his dick while his not Knott was pushing and pushing.
But then He adjusted a little and hit straight the spot and my first and big line of cum shot from my dick straight up to my face. But he did not hit the spot once but several times and I was forced to cum and ejaculate every single time. There is nothing I could have done to prevent it. It was one hit and one shot of pleasure. I don't know how often he hit the spot but it felt like at least 20 forced orgasms in a row.
There was I - laying below a bed, shooting unwanted loads of cum out of my penis while a Rottweiler was shooting his loads inside me. It was only like 1.30 minutes in when the first hit occurred and it was this moment I completely forgot about myself - just enjoying the wave after wave of unwanted orgasms, which were forced with every hit Rottie landed.

After 2 and a half minute I guess it was over. His knot was full swollen inside me. I could feel an immense watering load of cum waiting to get out and my ass and my dick was pulsating, still shooting small lines of cum. I was still just a body ot thinking about anything than the pain and the urge to cum. After this 2 and a half minute He finally stopped hitting the spot or thrusting in total. I felt totally waisted. This were two powerful minutes. But I was not finished yet. Still just a body I was hoping that it would start all over again but After like 20 seconds he turned around and tried to pull himself out. It was not possible. We were tight together. He must have realized that too and I don't know what it was but my body was screaming for more! I have never been that horny in my life again. Even the unbearable pain could not make me feel differently about it. I needed to cum again. But even before I could start of thinking about anything I was back to body. Rottie had turned back to the bed and started to thrust again. But this time he hit the spot straight away. It was just like another 20 seconds before he stopped again but hell was it awesome! I was screaming in agony and lust while pumping out the last rest of my seemen into the ground with every forced orgasm. Then after like these other 20 seconds it was all over again.

He was standing there for like 5 minutes, while is Knott was swelling down, while I was still trapped in pleasure.

Then he turned around a second time and tried to untie.
I pushed too like I needed to take a real big poop but thanks to all his cum it didn't hurt as much as you may expected. It was good lubricant. He also had already swollen down very much and then he flushed out. Followed by a wave of dog cum and me having a final orgasm. This felt so great, like the biggest dump in my life with orgasms. Rottie went back to his blanket starting to lick his genitals while I was still laying below the bed for at least another 10 minutes, wondering what made me cum and what I just have experienced. Then I tried to get up, still feeling the orgasms but also the pain coming back.
The next hours where the worst in my life. I thought I would need to call an ambulance but was to embarrassed to do so. The pain was horrible. I couldn't sit anywhere. I had to shit several times and I also needed to clean everything up before my parents come.
I was really lucky that I didn't had any injuries from this at all. Not even a scratch but an overstretched asshole.
I slept 3 days in a row on my belly. When my Parents came back home I did not tell them but also explained to them that I'm doing a diet and would not eat with them. I would have probably not eaten anything while sitting on this ass of pain.
Walking was also very painful but I could go slowly and could take rottie for walks later on.
I wasn't scared of Rottie after this accident happened - since it was the biggest Orgasm in my life (and even today) I was more like to think about doing it again. But then there was the pain and I decided not to do it. He raped me that's for sure and I must have suffered some psychological problems from that because I never could feel bad about him. All in all he was just a dog. After two weeks when my butt felt normal again my friend was back too. So I brought him Rottie and never have watched him again since. So even if I would have liked to try it again there was simply no possibility. What I also had to realize is, that since I was a Virgin this dog not just raped me but also took my virginity.