For me it is different depending on who is going to have the pleasure of receiving my manhood. With my girlfriend I usually just say "let's get it on" and she will get on her knees or spread her legs in front of me. When getting some ass on the side with a rando or some repeat slam it ranges from "I want to be inside you" to " I am going to fuck you" depending on the whore factor of the chick. I REFUSE to us the phrase "make love". That is the worst saying ever.