1 definition by PARTY EXPERT

a giant rave where people go to have fun, smoke some weed, and listen to loud ass music with a shit ton of bass. its usually pretty insane, and is giant!
"Yo Bro, I just went to a FAT RAGER, it was so dope, so many people were there and the music was amazing!"
by PARTY EXPERT October 18, 2014
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