Backup girl
A girl who is only kept dangling by a guy whilst pursuing another, more attractive girl. Usually to have sex with when things go wrong.
My girlfriend was a "backup girl" before she met me.
"Are you dating her?"
"Nah man, she's just my backup girl."
"Are you dating her?"
"Nah man, she's just my backup girl."
Backup girl by A-non-e-moose. December 9, 2008
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