A term used to describe the small flecks of testicle debris typically found in the small section of a toilet rim where the seat separates near the front. Derived from the root word "Balls" and the word "Dander".
"Oh man, I wish he'd wipe that bander off before he leaves."
"There was a pile of bander on the toilet today, don't men wash their balls?"
"Oh baby, shake some bander on my face!"