TGAH 

Abbreviation for ' Taynes got a hummer'

A popular 4chan meme, poking fun at frivolity of the bourgeois class

4chanman: didnt u hear? tgah
beastluva: LOL

TGAH by NyceNickers December 18, 2012

TGAH 

Abbreviation of The Greatest American Hero.

guy1: have you seen TGAH? :)
guy2: no :(

TGAH by Cyber Toon August 31, 2014