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1.
While receiving a blowjob, the man pulls out and blows his load up the blower's nose, then screams, "That will give you something to think about!"
Sarah dumped Jim after he gave her a brain teaser.
But I thought she liked puzzles...

by Billy Jenkins December 16, 2007
 
2.
A brain teaser is getting your brain teased...obviously.
If you dont have the imagination to determine wat a brain teaser is, then youre officially stupid.
person:brain teaser!!!
idiot:wats a brian teaser?
person:your dumb
idiot:i know...
by shaggy 2 dope September 30, 2006