Taboo

Im from religious(muslim)background.And its a terrible to be a muslim.So much boundaries n barriers .I never accepted this religious mind set.It just started sometime back.we are a family of four.Me,Mom,Dad and elder sis.I like to watch porn in the lounge as every one sleeps.I get aroused alot watching porn on big ass T.v. while naked and with a thought of getting caught by mom or elder sis makes me super excited n hard...It started around 3 am at when I was naked in lounge watching porn.Dad was out on business trips as usual.I was badly in need to rub.I went to the kitchen for oil.on the way back It just crossed my mind to check mom who was asleep.I was nervous too but excited.I took view she was sleeping..my heart was bursting as it was going to blast.I was breathing heavily.I just kept myself there outside her room..I kept rubbing myself during this time.then I realized that she will not catch me as she is asleep.I stood in the center of room door with hard on n rubbing it.it was ectasy ...I was feeeling free n in control ..I then went slowly close to her..saw my mom wearing night gown..she has nice clean body tonned thighs..I smelled her hair..I slowly touched her ankles ..she didn't move..I kept touching her feet with a finger..then progressed by touching it with my dick..im 6 inch long 4.5 inch thick..I was getting out of control..I decided to close the door n locked it...I then slowly opened her gown belt...she has round tight boobs..n she smells nice..I touched her hips as she was on her stomach...I couldn't resist..finally I sat on her hips grabbed her hair..she woke up..tried to resist..but I was well oiled down there..it went straight in her ass.she was loud..panting abusing scratching me with her nails..I was deep in her ..she was un able to speak complete words...we unbalanced an fell on the floor..I kept hold on her..I could feel her ass tightly gripping my dick ...All I could hear was a broken word "No.ooooo. noo..oo"..I kept drilling her..what happened next made me excited more but with great nervousness was my eelder sis knocking on the door calling mom and asking her that is she alright and whats the noise..I started pounding mom deep as adrenaline rushed..mom was literally unable to stop pounding which she was trying hard to do...I grabbed mom closer to the door so my sis could listen mom getting fucked..elder was curious because dad was not home and how come these kind of sounds are coming from her room(thats what I thought)...I did mom for sometime I came in her thrice...waited till elder sis left..then left carefully leaving mom exhausted on the floor all used up with door left open wide...