Top Definition
The act of masturbation by moving your hand up and down the penis emulating the launching of a shuttle craft over and over again.
"Billy, what were you doing in the bathroom so long!"
"I was launching the hand-shuttle mom!"
by Goldleader February 21, 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.

×