This is a pretty vigorous foreplay.

Reminds me of a joke I heard once.
"Hey, big guy, wants some company?"
"Sure, but be warned, I punch."
"Ha, that'll be two hundreds bucks, then."
"Okay."
...
"Say, you're pretty ripped, you're gonna punch a lot?"
"Depends on you. I'll punch until you give me my two hundreds dollars back."