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1.
A Ghetto way to say Hello or Was up
waaaaaah,what yall doing
by LaDonna February 24, 2005
 
2.
the correct thing to way when wacked in the head.
(according to Monty Python's Flying Circus)
proper head whacking explitives
not to be confused with more common incorrect outbursts such as:
AH!
ARRRGH!
S****!!!!
and other such
"now to try your getting hit in the head training."
WHACK
"WAAAAAAH!!!"
"VERY good. And again."
...
by PizzaWolf October 05, 2006
 
3.
the sound of a baby crying from pooping or peeping their pants
i just crapped my pants....WAAAAAHHH
by peener part 2 January 07, 2005