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1.
So over the top stupid, contrived, corny or simply WACK that it is fantastically wack, or simply WACKTASTIC
"Hey, you buy that Simple Plan CD?"

"No"

"How about Nelly? Or P Ditty? Or 50 Cent?"

"Nah, they are all quite WACKTASTIC"
by Chris Garay May 05, 2005
 
2.
An individual or place that is so unbelievably wack that you cannot explain its level of wackness. This simply makes them wacktastic.
I can't stand working at this damn gym, this place is straight up "wacktastic!"

Man, that girl is don gone "wactastic"...look at dem shoes!

I can't stand how all these "wacktastic" individuals on facebook need to let me know what they're doing every second of every damn day.
by Brother_david March 01, 2012
 
3.
totally nerdy way of saying wack(a white boy espression)usually used by white boys in the ghetto and they usually get shot by 20 black gangsters
WHITEY: sup my nigger, thats a totally wacktastic tattoo on your ass.
BLACK GANGSTER: shut the fuck up white trash....bang, bang, bang, bang, bang
WHITEY: what the fuck nigger you broke my glasses.
BLACK GANGSTER: BANG.
by ASHANTI JONES February 28, 2004