Attractive and gratifying. A synonym for "cool." The most inefficient synonym for "cool," that is. I have never heard anyone use this word, besides in a cartoon where the protagonist uses this word to compliment someone. This someone so happens to be a fat
dude. The show then emphasizes how
far this kid has shoved his
foot into his larynx. Using this word unironically is not a good idea, as its homonym is not the most flattering adjective. No offense to fat
people, though. They're usually pretty cool.
Johnny
Test: You're looking super PHAT today!
Cool Clerk: WTF
dude? Rude!
Johnny
Test: You know, PHat, with a "PH!"
Cool Clerk: That's totally lame bro.