When someone lays on their belly flat and a male mounts them laying flat himself . Using their hands to spin them around like a propeller blade on a helicopter
Steve: Hey Markus what are you doing later today?
Mark: Nothing much. Just got done with The Propeller X.
Steve: O man with who bro?
Markus: My boy Jesse just showed me. He was the propeller.
Steve: That's fucking sick man. I knew you were more then a dick vampire.