Hot Dogging
When a male places his dick (or wiener) between a females butt cheeks (or buns) and thrusts without penetration.
Example:
John: So did you nail Mary?
Bob: Yeah, and we were hot dogging for a while too.
John: You're a freak.
John: So did you nail Mary?
Bob: Yeah, and we were hot dogging for a while too.
John: You're a freak.