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.
Cool Clerk: WTF dude? Rude!
Johnny Test: You know, PHat, with a "PH!"
Cool Clerk: That's totally lame bro.
by Derineka February 19, 2021
Get the Phatmug. 
"What are you doing Friday Sean?" Asked Jordan
"I'm getting Phatted mate" Exclaimed Sean
Or
"I'M GOING TO GET FUCKING PHATTED LATER ON"
"I'm getting Phatted mate" Exclaimed Sean
Or
"I'M GOING TO GET FUCKING PHATTED LATER ON"
by BDFlynn June 2, 2014
Get the Phattedmug. In the 80s, an 18 year old inner-city black kid from Richmond, Virginia told me that it stood for "Pussy, Hips, Ass, Tits", And he told me this around 1985. So that word is AT LEAST 27 years old. True Story. Just thought I'd share with you.
by Bored Dude May 28, 2007
Get the phatmug. by MayorAadamWest December 26, 2017
Get the phatmug. by Jadzzz June 29, 2017
Get the PHATmug. Phat does mean Pretty Hot And Tempting, like the other definitions say. The problem with "phat" is that it is no longer in really. It has kind of phased out and is mostly used by wannabes, lowerclassmen in high school, or middle schoolers. It is now considered a slang faux pas. I wouldn't use it if I was you.
by Doobie Smokes You December 14, 2004
Get the phatmug.