ditchman
A wingman who provides you an excuse to ditch a date, usually by calling or texting at a prearranged time. The recipient of the call or text can choose whether to use the ditchman as an excuse or not, depending on how the date is going.
Did you hear about that asshole in Austin who's suing a girl for texting in a movie he took her to? I guarantee that was her ditchman texting because he was a creep.