(adj) 1. acting like an idiot 2. liar
Although quite simmilar to being an assfish, it is used more as a personal denunciation rather than that of a group
(syn) idiot, assmunch, ass capitain, ass pirate, assclown, stupid-ass bastard, fuck face,asshole
(ant) genius, trustee, smart, intelligent, knowledgable
Origin: (during the wake) Hey Carmen, u know if u rearange the letters of your grandmother's first name it spells asstuna?
Example: (after someone punches you) "what the hell you friggin' asstuna!!!