Top Definition
In Caucasians, the color of the skin under a bathing suit or underwear waistband. Skin which hasn't seen direct sunlight recently (if ever).
When Grandma was in the hospital, I accidentally saw her fish belly white butt.
by leroyd January 09, 2010
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.