Dog has his way

When I was 16 my brother was going away on holiday he had a Rottweiler I had to walk him feed him he was a big dog .it was q hot summer day wee were walking along the river bank so I took my t shirt and shorts to cool down he was lying sleeping on the bank I thought nothing about it . After my swim I lay in the sun nude for a wile turn over the dog was called bull had went somewhere so I was getting up from the lying on my front so o was on my hands a knees when out off nowhere I had a 15 stone dog on my back and could feel wet warm dog cock poking at my leg I knew at the point let home fuck my leg it be ok I was telling him bad big get off me but he was having none off it then he hit the spot my bum hole but he stopped I could feel his spunk running down my leg thank god I thought he got off and I seen his full size at that time it was big . Later on in the week I started thinking what would a cock in the ass fell like then it hit me bull couldn’t tell anyone i had my brothers house to my self so I hand made my mind up I was going to try it later on that night I got he was laying beside me so I give him a belly rubs then there it was so I wank him I he responded quickly pawing at me so I dropped the shorts and club my hole he was straight up this time he was on the spot but I didn’t know dogs when fast and hard he pushed his now very large cock all the way in the pain off it was bad then I try to get him to stop but no chance I thought my hole way going to be ripped off then he slowed down I couldn’t move I felt my ass get strength more and more then wam spunk been put inside off me the he stopped and got off I felt myself been pulled backwards I and if my inners were going to be pulled out he stood there seemed to be forever then I heard a pop and him cock slip out he lay down I thought my ass was ripped to shreds but no sore but I never seen so much spunk . When I was 18 my brother moved abroad I took him as my dog we had some fun