An expression used when a girl finds something absolutely cute from a cute puppy on the road to a guy knelt down proposing to her.
And number of A's between the first letter A and the last letter W can be infinite based on the cuteness of the subject the girl/boy sees. (mostly girls, guys use it only to impress the girl he's trying to hit on)
Aaw, that doll's soo cute! =)
by Pattygal November 12, 2011
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(while IM-ing)

jessica786: Hey wats u up2?
jessica786: are u ther??!?
Zoey143: sry i was AAW
by sp33dspeed March 4, 2009
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From the most amusing piece of porn in the world, where a groupd of incredibly black men stand round masturbating as one of the black guys sticks his nuts in the ass and dick in the pussy of the only white chick who is sitting silently throughout. Various black comments are made such as booya but aww nigga had remained the most amusing. Can be used at all times when someone does something cool or something shit happens.

Mainly used by white guys to emmulate black people in a hilarious way....aaw nigga!
p1: dude, i just kicked that guys ass!
p2: aaw nigga!

or

p1: shit, i've lost my wallet
p2: aaw nigga!
by Mace April 25, 2006
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