The action of a girl shaking her vagina when out of toilet paper.

Derived from the burger king commercial were fresh, juicy, lettuce fall from the sky bouncing off water droplets... in which the leaves resemble a girl shaking her vagina.
Girl: I really need to go piss, but there is no toilet paper.
Boy: Just shake your lettuce
Girl: I'd rather wipe my Japs eye
by NickBowwow January 7, 2011
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when a girl has a piss in public
look at that sick bitch shaking her lettuce in the middle of the road.
by matt November 13, 2003
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A derivitive of 'Wipe Your Minge' which, in turn, is a derivitive of 'Dry Your Eyes'. That is to say, 'Stop Moaning!'
"Just shake your lettuce and get on with it!!"
by Jaffa_cake April 24, 2007
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