Asstastic 

verb: to be fantastic at being an ass.

Tyrone was being real asstastic at the party when he threw wine on my white dress!

Asstastic by Shady Toni December 19, 2008

asstastic 

Slang. A word used to define a really awsome or great time.

Man, that was totally Asstastic!

asstastic by Kiamors August 28, 2003

Asstastic 

Ghetto ass on a white girl!

That white girl right thurr is ASSTASTIC!

Asstastic by Brooke January 20, 2004

asstastic 

the description of a great ass on a chick when you see one.

hot damn look at that asstastic chick!!!

asstastic by Bein October 20, 2008

Asstastic 

When a guy/girl has a glorious backside to the point it makes you stop whatever you are doing just to watch it sway away

I was walking through the mall when through my peripheral I spotted this asstastic chick swaying away and wads mesmerized into a coma!

Asstastic by Nomolos69 September 7, 2010

Asstastic 

What you say when you see someone with an ass so nice you just gotta yell something

"She got a fine ass". Tom said
"Damn straight it's asstastic!" Jim answered

Asstastic by gfja November 15, 2010

Asstastic 

The opposite of fantastic. Bad, undesirable, unpleasant, displeasing, or abhorrent.

That restaurant is asstastic.

Asstastic by Donnie Ballgame May 21, 2009