Disposable Girlfriend
A girlfriend you have at a short time only because you're bored or just want to have a girlfriend. A girl who is dumb, is lonely, or has daddy issues make great targets. You usually will lie and appeal to this person until they get sick of you or you get sick of them. Then when you're done you get them to hate you so you don't have to talk to them again.
That one girl I dated last month? She was a disposable Girlfriend. I never really cared for her.