Greasy Bangs 

When somebody has been doing physical activity and their fringe (bangs) become sweaty (greasy)

I have just finished climbing and I have greasy bangs

Greasy Bangs by Greasy Bangs gang August 13, 2017

grease bangs 

Bangs that have not seen the hot stream of a shower in at least 48 hours.

"Look at my grease bangs, I'm bringing sexy back and I'm hunched over on two chairs"

grease bangs by CSSJ April 13, 2007

grease bang 

when one skips a few days of showering and their hair becomes greasy. if they have side bangs they will split up in chunks of shiny hair instead of having a all the hair as one

Uhg.. these grease bangs are pissing me off!

grease bang by llllllllaaaaaaaaaaaaa February 13, 2010