Definitions by Tony89

back out bill 

1.) One who cannot keep his word and always backs out without notice.

2.) No Call, No Show!

Tony: You going to come over tomorrow for the game?
Bill: Yea I'll definatly be there!
@the party.
Justin:Where is bill at?
Tony: I don't know he never called.
Justin: Good ol' Back out Bill

back out bill by Tony89 August 11, 2007