back-up bitch 

The next person in line that you ask to do something with after your preferred person isn't able to.

guy 1: "My girlfriend can't make it for lunch with me today...do you want to go?"
guy 2: "What, am I your back-up bitch?"

back-up bitch by RNPS September 6, 2007

back-up bitch 

Person you invite to go somewhere when your preferred person cannot go. Can be male or female (non-gender specific).

"You can't make it? I better call my back-up bitch!"

back-up bitch by Rob Norment December 15, 2008

back up bitch 

A bitch to bring as back up to an event such as a concert, party, etc... basically any social event, as insurance for getting laid incase the social event isn't providing bitches that are bangable.

Awesome guy one: "dude! let's go see def leppard and hit on some milfs!"

Awesome guy two: "i'm down but we better bring some back up bitches incase they all turn out to be cracked out moms."

back up bitch by thesean March 28, 2012

Back Up Bitch 

BUB for short. It is what you call the girl that you are dating or messing around with that isn't your first choice or your second girlfriend
When Speaking in front of your BUB. Use the word bubby so that she feels it is a term of endearment.

Rick: So How are you and Patty?
Jon: Well you know she is my back Up Bitch (BUB). Waiting for Jen to be single

Back Up Bitch by liquidtuna December 14, 2009

backup bitch

The girl a guy keeps leading on even if not entirely interested in her, as an ego boost or backup just in case the girl he really wants turns him down. Usually the girl he leads on has a crush on him, and is okay with being lead on, because she's still getting his attention.

She really liked him, but she was only his backup bitch.

backup bitch by loveursteeze May 1, 2015

backup bitch

Ur ho you keep on the side away from all your friends so you can move out of the state if shit hits the fan and you'll still have pussy to fuck

Person 1: hey what are you up to?
Person 2: fucking my backup bitch

backup bitch by Pickabooo January 10, 2007

backup bitches 

Two or more bitches in a group with a leader (usually a hotter chick).

If the hot chick wants to get in the face of a rival, she brings along her backup bitches cause she is too chicken shit to go solo.

backup bitches by pmtm June 12, 2010