goobcore 

Rock music with a nerdy, self-conscious feel. often performed by goobershags who don't realize their talent.

Some goobcore bands are:
Weezer
Fountains of Wayne
Phantom Planet
Goobcore may also refer to specific songs or albums.

goobcore by Scotty 'n' Kirk December 27, 2005

Goofcore 

A new music genre that uses lots of cartoony sound effects to make some goofy ah beats.

What’s your favorite music genre? Mine is Goofcore.

Goofcore by Dragotherium September 18, 2022