Backed up woman

A girl that is involved with another man, she is taken, off the market, unavailable.

John: Hey dude, check that bird out at the bar in the purple dress
Dan: Yer i know mate she is hot
John: I'll see if she wants a drink
Dan: Nahh mate shes a backed up woman (or just backed up)
John: For fucks sake!

by kanerockgod March 9, 2009