When a man has a buzzed head with one clusp of hair in the front longer than the rest. Many french men have rat bangs, like a rat tail from the 80's but in the front.
Damn, did you see that french dude with the rat bang? He is definelty eurotrash.
by lindy August 12, 2004
1 more definition
When you headbang to good metal music, whilst completely ratarsed.
*falls over* "man, lets go ratbang."
by Droob August 18, 2007