Sometimes, a woman does something with her body that is just jaw-dropping, amazing, out-of-this-world. You stare and think 'oh, my god' and it might be a little scary, but you just can't help but stare and wish you were there. Two hands in her vagina, a hugely stretched-open pussy or a giant gaping hole, a sloppy wet frenzied masturbation... you'll know it when you see it.