SEX. the term was immortalised by the song 'jiggly jiggly' of which the lyrics were thus:
(it gets good in the 2nd verse :P)
So the boy knew the girl the girl knew the boy,
The boy met the girl the girl met the boy.
He said “Lemme take you out and show you a wicked time,
I’ll wine and dine you girl and then I’m gonna make you mine.
I’ll walk you home in the moonlight,
Coffee? Yes please, but what I really wanna do…
Is make Jiggly Jiggly on your sofa,
In yo bed I’m gonna hold you tight.
Make Jiggly Jiggly in the hallway,
Right through till the morning light.
We make Jiggly Jiggly by the window,
And after that we might,
Make Jiggly Jiggly on the carpet,
Right through till the morning light
all you think about is jiggly jiggly you make me sick mother!