1 definition by timsarder

Started in Japan, (although probably a lot more well know in america) meaning to have sex, often using a pelvic thrust when doing so.
Caused when a American English teacher told some Japanese kids on a soccer field the English words for waist and shake. Not understanding completely, they put it together to come up with a new word for sex that no one else in the school understands.

The teacher put it on his website and from there it spread.
Boy talking about girl: "I'd waist-shake that."
Boy to girl: "Waist-shake?"
by timsarder February 16, 2006
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