Human Flapjacking

Two people sexually pressing their bodies together with syrup between them (butter optional) while masturbating each other.

Bill: You want Aunt Jemima or Mrs Buttersworth?
Bill 2: For what?
Bill: I thought we were going to try Human Flapjacking tonight?
Bill 2: Oh shit, that’s right. Get some Buttersworth. Speaking of, don’t forget some butter.
Bill: Margarine ok?
Bill 2: No, Bill, it is not. I have standards.