Top Definition
When you take a dump and jerk off at the same time.
"damn, that brey chick is hot. But i gotta take a shit. I'm gonna go masteboop.

"mark's mom caught him masterbooping. He was covered in feces and semen."
by cuminmybutt December 09, 2007
7 Words related to masterbooping

Free Daily Email

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

Emails are sent from We'll never spam you.