An extremely attractive person.
Most commonly used in the context of an educational institution in which students declare a "
major," so this term can be used openly, since it sounds so much
like "Finance
Major."
Dude 1:
Dude, Kelly's a total Fineass Major!
Dude 2: Totally!
Kelly: Actually, I'm an Enginerd.
Dude 1: *whispers to dude 2* no, actually you're a fineass major.