Asstastic

When a girl's ass is the most defining feature, often times all other features being ugly. It is generally the same idea as being a butter face, except for the ass,

Man, Sadie isn't too hot, but she sure is asstastic.

by Hyderabod June 4, 2016

Asstastic

Opposite of fantastic. Horrible.

Bro, after losing my keys and catching my girl banging boss, this day couldn't be anymore asstastic.

by Justinsidemyhead June 11, 2018