When a man inserts his penis down another man's penis.
"Hey Pete, do you facy some jippy jappy?"
"What's that Pete"
"That's when a man put's his dick into another man's dick"
"Oh, of course, lets jippy jappy"
a word used by the DTC during ''who dunnit?'' the meaning is irrelevant, however it is a comical phrase and is highly amusing. Usually mentioned with Ellen Grey?!, Daisy Or Of Course, Masseys Mum.
Mush: Hey, 1, 8 & 4.
Mush: Daisy Had Jippy Jappy With Masseys Mum.