Top definition
An invitation for sexual activity involving the repetitive flailing of one man's flaccid genitals, specifically the scrotum against the skin between your ass and your penis, with the intention to make a revolting yet beautifully natural mating call for all males in a radius of 10 metres to hear. Frequently used in a variety of locations from gay orgies to bromances.
Brynn: What's that slapping?

Tom: It's Connor. He's in his bedroom practising the Magic Frog for tonight.

Brynn: He sounds pretty good.

Tom: I know. Tonight's going to be great.
by 3dslover March 09, 2014
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