Top Definition
When you're taking a bath, jacking off and then bathing in your own semen.
"Goddamn it David, your masterbathing clogged the drain again!"

"Yeah, Kirk seems like a smart guy, but he's just too busy masterbathing to actually teach us."

Masterbathing is more private and intimate than dunk-tank-wanking.
by Tha 69 Boize January 17, 2013
The act of bathing thoroughly and for a lenghty period of time.
If you are in the shower for more than 45 minutes, you are masterbathing.
by CaptainOJ May 23, 2007

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.