Masturbate Before Messaging: A solid advice for men to curb the number of awkward /cringe-filled messages they send. Based on the fact, once ejaculation takes place, the man can start thinking with his brain, again, getting rid of the libidinous urges.
Joe: Dude, I'm texting this girl I met at the supermarket. What should I say?
Matt: Whatever you say, remember to MBM.
Matt: Whatever you say, remember to MBM.
by Internet Human August 6, 2019

by EV514 January 2, 2010

Message Board Misunderstanding: Used to connote sarcasm on a message board, or to apologize in advance to whomever you might offend...
by Ms. Topaz September 23, 2005

by NickBell July 16, 2006

Motor Boat Material, Any woman with large breast that you can put your face in between and motor boat
by Tony and Luis July 6, 2011
