Hot-Ass-Masher

One who vaginally penetrates a girl, while beating her ass into submition with a blunt object.

Christina: I had to go to the hospital after last night Fred, you Hot-Ass-Masher!
Fred: Worth it.

by Hot-Ass-Masher Crew June 15, 2010

Masterbache

To masterbate using a soiled nappy or daiper.

That Sean's so sick man. He loves to nothing more than getting home, putting on his silk kimono and to Masterbache.

by Dave Woolham May 21, 2008

fanny masher

1) A very large penis.
2) A man who enjoys vigorous sex with women.

"That guy over there gets all the women..."
"Yeah, he's got a fanny masher"
"Yeah, he's a fanny masher"

by OllyRinse December 24, 2008

Masterbational

Something sooooo totally badass that right at that moment you want to drop your pants and have a massive wank.

Star Trek was so masterbational that I wanked super hard right in the theatre and shot the screen with my dick cheese.

by BuGzeeYY June 14, 2009

masterbout

to think about someone during the act of masterbation; often someone who is seemingly, or literally, sexually unattainable

"I need to stop masterbouting my ex and move on."

"Yeah, I've been masterbouting your ex too, sorry man, I can't help it."

by LFatheistgirl February 12, 2009

masterbike

(v): to stroke one's shaft until semen is ejaculated from the penis. While riding an effing bike. Seriously.
Happens sometimes at Colorado College...
Possibly the most perverted act one could ever commit.

"Did you see that sick pedophile masterbiking while he passed by all of those eight year old children? He just loves to masterbike; it's his favorite pastime."

by TheBassist99999 September 3, 2009

Masterboat

v. The act of self-motorboating

Dude, that chick's boobs are so big she can masterboat!

by Motorboat233 January 4, 2011