This is so damn easy: Lana Peaches and Mandingo in Dingo: When Big Just Aint' Big Enough. Justin Slayer highlights the excellent bj just fine, and then it's off to missionary, where she has about 4 or 5 back to back orgasms and I think "holy shit, this could be the best scene ever." Suddenly, he pulls out, and immediately it shifts to a mediocre cowgirl, and they've lost me. It looked like she was good for at least 3-5 more o's in missionary at the rate she was going, and while I've always been a fan of cowgirl, I would've much rather seen a "behind the balls" shot with her lusty, orgasmic, eye-rolling face looking on in size-queen rapture. I suppose it's possible that this could've been attributed to Mandingo's tendency to pop too fast, but still, even after a break, ANY amount of additional missionary would've made a world of difference- after all, the shot only went on for something like 20 seconds!! Still, this remains some of the hottest 20 secs in porn history IMHO.
