The phenomenon caused when two partners are each preforming oral sex on each other (69-ing) and each have simultaneous explosive diarrhea, propelling both partners in a circle like a pinwheel
Paul and Amanda did the pinwheel last night. Hazmat had to come in to clean it up.
by TheGingerDynamo September 12, 2011
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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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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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1. The act of vomiting and defecating at the same time.

2. When the smell of one's own excrement causes him to vomit directly after defecating.
I was drinking Mad Dog all night, and when I took a shit, the smell sent me pinwheeling.
by DamnDirtySteve October 19, 2003
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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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a fetish tool that looks like a demented dental tool; used in BDSM. aka: Wartenberg pinwheel
"I'm into bondage, spankings, and experimenting with a good pinwheel."
by Diana Banana January 19, 2009
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