A woman who struggles with emotional attachment and whose only relationships arise from sexual intercourse. Often involved in sex clubs, openlifestyle and swinging.
I thought she was going to be a great girlfriend, turns out she ain't nothin' but a fuck bag!!
A bad situation that a person finds themself in and is powerless to stop or change the course of.
Mary really put John in the Fuck Bag by showing his girlfriend Jane those pictures of John letting 4 guys stab him in the dook shute at that party last weekend.