This reminds me, y'all ever heard of a bucking bronco?
It's where, while you're having sex and you're gettin' close, you tell your lady something to really piss her off. Like your fucking her sister, or along those lines. And then you grab her hips and hold on while she tries to get away. Usually, it's supposed to be doggy style, but I find missionary works best. She can't get the leverage to really get away. lol
Sorry, I'm a sick basterd.