Be. Aggressive. Be. E. Aggressive.

This is how you do it. Fuck him like he's your slut, you've got the cock, and you're going to pound that pussy till it cums.

Remember, it's all in the thrusting of the hips. The same way your guy fucks you. Don't move your upper body - just concentrate on your hips moving separately from your upper half ;)

This is one of the most violent, sexy things I've ever seen. I'm going to fuck my guy so hard tonight.