When you put your hands together and roll them down a friend's back unexpectedly in a quick unexpected motion, hopefully making them jump or yelp.
"I've had enough, dude! Stop Pinwheeling me!"
by JrooJrooBonz August 02, 2008
What Nickelodeion was before 1981.
Pinwheel is what Nickelodeion was 1977-1981.
by 12thirteen October 30, 2004

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