Fuck me in the ass, fuck me in the ass you stud, fuck me harder, harder, HARDER DAMMIT.
Forget the fuck me hard in the ass. You say in your sexiest voice: Oh baby, I want to suck your georgeous cock slowly running my lips up and down your entire shaft and slowly taking it all into my mouth until you cum hard in my mouth.
Be a cheerleader. No, I don't mean wear a cheerleader outfit to bed (at least not all the time). Tell him what you want him to do to you, and be as graphic with your language as you can. (i.e., "I want your tongue all over my tits; that's it, now move down to my pussy and play with my clit.") That sort of thing. Tell him how you like his cock in your cunt. Be creative. You will benefit from it, trust me.
It must be sincere..Don't just say stuff you don't care about..But rather, tell him about all the dirty thoughts & fantasies you have, exciting times when you masturbated, or that you want to watch him jack off(if you want to) tell him when your panties are soaked(especially over the phone),tease him by talking about your underwear or lingerie or any new things you want to try, etc..
Very simple. Tell him how you want to be fucked. Harder, faster, slower, you name it. Just be sure to understand that telling him exactly how you want to be fucked could make him cum faster. Use your power carefully.