Top Definition
Referring to a girl who looks good on a "Good Day - Bad Day" basis while other females are listening in on conversation that may be friends with the girl being talked about.
Friend 1 : So what do you think about the new girl, Alyssa?

*Glances at other females around nervously.*

Friend 2 : She seems kind of a GD-BD, but today was definitely a good one.
by Legacykidd July 02, 2011

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.