by hallelujiah March 16, 2010
by Anonymous L-Value October 11, 2002
A modified form of "fantastic" that injects the word "ass" to reverse the meaning. Asstastic refers to something that sucks or is of poor quality.
by HugeBreasticle March 19, 2005
A word used to describe a girl with such a breathtaking, beautiful booty that it becomes that girls defining factor.
by Dr fantastic September 11, 2014
Damn that '63 Fender Strat is asstastic!
by andrew January 12, 2003
by Gilbert Godfrey December 08, 2004
by onedudeman July 16, 2006