A phonetic expansion on the word blah, usually used to emphasize extreme boredom or disinterest. Blaaah is typically used on the Internet, especially irc chatrooms
Too funny for words. Always following a dumb assed remark intending to insult, threaten or put you down. When all the while you know you got them by the balls.
So the whoresaid ..." I'll kick your ass bitch!!" And I said ..." Blaaahahaha."