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8.
answers any question you don't know the answer to
Dan: hey wats the answer to #1
Jon: blah
de Jonta 13 octobre 2005
 
9.
The Golden word of English Literature!
It is mimed behind people's backs to suggest that they talk too much or that they talk about useless topics for no reason.
It is also viewed as a word expressing indifference, or lack of a preference.
blah is sometimes assumed to mean something negative because it is used to replace a word that may be unpleasant, but blah itself is neutral.
"Blah! Blah! Blah!"
"I Feel Blah!"
"Blah! stop your crap!"

de Jin! 3 mars 2008
 
10.
A word that, when uttered, causes the head of the one who said it to leave the body of the one who said by means of a miniature explosion.
Blah. *BOOM*
de bat_hero 16 novembre 2009
 
11.
Cane define as random talk,bullcrap talk or a corny talk of any persons in any chatting rooms.
Person 1: Man, i love YTP..they're so funny,hey did you know that..
Person 2:Ugh,you fucking talking about blahs again..
de Lolskie 27 septembre 2009
 
12.
an abbreviation for "bored like all hell"
person1: What do you want to to today?
person2: I don't know. I'm blah.
de izakt 1 mars 2008
 
13.
a word used when you're extremely bored or don't know what else to say
"blahh i'm bored"

or.

"so that should be fun"
*ackward silence*
"blahhh"
de pshaa. 15 décembre 2008
 
14.
A word to break an awkward silence

I'm A Flying Unicorn now oftenly used
a group of people finished a convo...

Random: BLAH!
de Smiley_Swarley 10 juillet 2008