Jackasinine - (adj) [jack-ASS-eh-nine]
1) Stupid person doing stupid things (jackasses doing asinine things).
2) Situation so obviously stupid approaches unbelievable (jackasses doing asinine things).
"Dude, Bobby forgot to bring Whitney batteries again. I mean doesn't he get it? He's so totally jackasinine. She's going to give him so much shit for only selling 20 million records again. Duh!"
"And how jackasinine was it for Ty to bring that huge bag of McDonalds cheeseburgers to the vegan dinner. Retard!"