Terrible facial hair, normally grown on the chin. Unlike goatees and beards, chin-fuzz often looks ungroomed and out of place. It can also resemble pubic hair.
by Steve-O, the King of the World April 24, 2006

When you squeeze together either sides of your chin it and it does not crease.
If it does crease, it is a bum chin.
If it does crease, it is a bum chin.
by Gemmer September 6, 2006

by whytsyed February 10, 2007

by Rbomb04 July 26, 2014

a cool ass, smart ass, slow ass, LIT ass teacher who apparently is a white girl in disguise. Be careful around him, cause if you accidentally fold your Science Project he gon bust your ass.
HAppyMeals: "Yoo the sub doesn't know how to shoot a basketball, has a Starbucks Gold Card and can't do math."
CareBear: "Stfu Mr. Chin is OG"
CareBear: "Stfu Mr. Chin is OG"
by TheAmazzingHulaHoop June 17, 2016

The physical after-effects of facial soreness that results from a long snog with a guy who has not recently shaved his face.
by Amanda February 22, 2004
