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1.
Bem
A Random Black Kid in the Harry Potter and the Prisoner of Azkaban Movies who randomly turns up and randomly says something Dark
kid1: Lovely day, Isn't it?

Random kid: It's like trying to catch smoke. It's like trying to catch smoke with your BARE HANDS

kid2: Where did that Bem come from?
by Truday11 May 30, 2010
 
2.
bem
A very sexy man with a large cock.
You must be a bem.
by Dyke July 29, 2003
 
3.
BEM
1) Bug Eyed Monster. A stereotypical being from another planet, usually depicted with buglike eyes.
2) The truncated name of a Japanese anime TV series, "Yokai Ningen Bem", and the name of a character from that series, in Japanese: Bemu. The series featured alien crimefighters, at first distrustful of humans but later learning to deal with human platitudes.
1)Help! There's a BEM trying to attack me!!!!
2)I'd like to know where I could get a translated video of BEM.
by pentozali April 03, 2009
 
4.
bem
an old sci-fi abbreviation for 'bug-eyed monster'. Dates back to the time of movies of the week that were so stereotypical, people made abbreviations for each kind of character.
Also an episode of Star Trek: The Animated Series, and the preffered name of bemdude
God, that BEM is fuggn' weird.
by bemdude April 10, 2005
 
5.
BEM
Bush Economic Meltdown
The world suffered due to the BEM.
by chillinout69 February 17, 2011
 
6.
bem
Booger Eating Moron. Someone of low intelligence.
What a bunch of BEMs, they probably can't tie their own shoes.
by Gravelpitt November 15, 2006
 
7.
bem
A cowardly person. One that is afraid of many, if not all, things. A phobe.
Come on man, she'll be right, don't be such a bem. Chicken... book book book. Toughen up boy.