look up any word, like donkey punch:
 
1.
Anything that spins fast; particularly helicopters.
Watch out, he has the whirly-woo. Shoot it down with an IGLA!
by yeeyeetotheyee December 18, 2013
 
2.
He is such an awesome lover, that I had the greatest whirly-woo of my life.
by Michelle May 18, 2004