Box Banger 

Somebody who eats too much out the Microwave (box). Banger comes from the sounds of the door banging.

You're a right little box banger, do you know them things cause cancer?

Box Banger by S Palmer October 6, 2005

Box Bagger 

a lame local band that no one wants to sit through to watch, usually played at the beginning of a show so that no one has to sit through the stupidness of the lame band's music.

"Man, that band was a box bagger, I hope I never have to see them again."

Box Bagger by Boss Bear & Co. October 9, 2008