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One who is Skinny yet stereotypically renoun for being similar to Simpsons 'Alpha Male Movie Idol' Rainier Wolfcastle because of his movie character 'McBain' being the same name as him.
"dude that gorilla just McBained that old grandma!"
McBain by Dave-0 August 20, 2006
An expletive you say when the world seems to be shitting on you for no good reason. Originated in Madison, Wisconsin.
Professor: We are going to be having a quiz today on last night's reading.

Student: MCBAIN!!!!!!!!!!!!!!!!!!!!!!!
McBain by arslavens September 5, 2009
guy1: do you know mcbain?

guy2: yeah his a piece of shit

guy1: yeah that guy
Mcbain by you failure2 March 7, 2010
To have legs like bleached white pipecleaners and bear a striking facial resemblence to Mr Bean.
Check out that dude in the shorts.... he's SO McBain !!!
McBain by Baku Goose July 13, 2009
literally the best surname to ever exist better than Blagg
mcbain innit
McBain by McShakespeare October 21, 2021

The Full McBain 

Screaming Mendozaaaaaa during an orgasm and firing an uzi in the air.
What's with all the holes in the ceiling man?" "Last night I pulled The Full McBain on my girl.
The Full McBain by hypefish February 23, 2011