Hmm i have been pinned down once, flat on the floor by a rather large guy, with a huge cock, he lay on top and i couldnt move, could hardly breath! His big cock thrusting in n out made my slim body creep along the carpet, till my head jambed under the sofa.he really went to town on my ass, thrusting hard n deep, i really couldn't say anything as i had no breath! Then his big cock swelled up, throbbed n blew in me, dam thing kept pulsating and squirting for ages as he moaned, he then sort of collapsed on top, pinning me down, cock still hard in me, i had to wait 10 minutes till he recovered enough to get off me! He rolled off me, unplugging my hole which just oozed with his cum, my whole body felt broken n drained! Took him another 10 minutes to get off the floor. His cum was dripping out of my ass for hours afterwards.... never really liked that position since! Thought i was going to get crushed!