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2.
A condition in which your brain temprarily quits functioning correctly causing you to look stupid.

A mistake
Dude, that band was having a major blurtation when they wrote that lyric.
by wow, personal. February 28, 2011
 
1.
When something sounds really good in your head but when you say it, it just sounds stupid.
We have a very very heavy blurtation tonight
by WZD February 23, 2011