A derrogatory term or insult. Typically used to describe a girl or woman who ruins things, but is not restriced to that and can be used to describe someone who makes you angry, or is of a general surly demeanor. Has no actual lesbian connotation. Seemingly a combination of dyke and douche bag but the meaning is greatly changed.
Originating during a heated game of Mario Party 5 in which Peach was declared a "Dykebag."
That dykebag Peach landed on the mircale space during the last turn of Mario Party and made me lose the game.