When sick with the stomach flu, pinwheeling is the unfortunate act of simultaneously projectile vomiting out one end while shooting explosive diarrhea out the other. So named for its resemblance to a pinwheel firework, which emits a strong stream of sparks in opposite directions in order to spin.
"Wow, I haven't been that sick in years. I was in the bathroom all night; at one point I was pinwheeling..."
by wordsmithjim April 14, 2014
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The act of twirling your boner out the sun roof of a moving vehicle to elicit interest from the opposite sex.
guy #1 Dude, did you see that fox?

guy #2 I'll bet if we excercise some pinwheeling, we'll get her attention.

guy #3 I think you're right
by Job Pilson July 15, 2008
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When using a Mac and your cursor become an infinitely spinning pinwheel. Often occurring when a programme crashes or when too many applications are opened/being opened at once.
While opening my Adobe software and watching videos online at the same time I was hypnotized by Mac's colourful pinwheel.

I was pinwheeling when I overloaded my Mac with processes.
by CyborgElete September 29, 2007
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the act of rapidly spinning your penis while taking a piss.
i totally just went pinwheeling in your bathroom.
by xSpAnKx MaNiiAc January 2, 2011
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A unfortunate side effect of being rather ill, and your body evacuates from both exits.
Dude, after eating that burger I was pinwheeling for a night.
by L. Duderino May 14, 2008
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a sexual position where the female is in a handstand and the male performs oral sex then she switches to a standing position and sexual intercourse begins alternating between the two

usually for the more active sexual couple looking for a REAL work out
wanna pinwheel?
by phill billings May 30, 2009
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The most amazing region in all of USY, filled with love, fun, and of course hookups.
From SATO to SECTS we do it the best, we're Pinwheel USY
by expnwia June 1, 2010
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