To masterbate in a somewhat aggressive manner, as though you're in a rush to get somewhere and you need to get off quickly.
"I had to mansterbate or else I would have been late for work."
by Jordy-Time February 18, 2006
Get the mansterbate mug.
1. Male form of masterbation
2. Jerking off
3. Whacking off
4. Beating it
5. Jacking off
Our police records show that you were arrested yesterday for public mansterbation.
by osiz February 9, 2010
Get the Mansterbation mug.