We've come to take it as a general rule of thumb that, if you can't get your foot to stop twitching while you're getting fucked, you're probably getting fucked pretty well.
Judgint by that definition, Xtube user koodydee1 and the guy he flip flops with in this steamy clip both manage to achieve excellent results in the sack. Both of these hotties manage to fuck the other into writhing, shuddering, foot-twitching pleasure. Now this clip has got us experiencing all kinds of involuntary bodily responses. Too bad they're the kind that come about when you're not getting fucked.