Top Definition
A sexual position where one partner inserts his penis into the ass of another partner, male or female, then spins himself clockwise using only his penis as a pivot.
Tracy and I did the japanese helicopter all night long.
by EigthOrderBandpass October 23, 2008
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×