1 definition by IceWater With Lemon

throwing your arm up in a counterclockwise motion, over your head and back down again (making an invisible circle with your hand), striking the ass of your lover on the upstroke while doing it doggy style
Then I gave her a windmill slap, like I'm Peter Townshend.
by IceWater With Lemon November 11, 2007
Get the windmill slap mug.