5 J

A Five Dollar Joint.

Yo man got any 5 J's?

J-5

A dude who’s probably the 5th in line in the Jojo series and the name got so whack that they just shortened it to a letter and numeral

Person1: Yo thats jojoliciously jotaro jojo the 5th!
Person2:That’s way too long just call him J-5