A slang term to define someone who supports himself/herself on the emergency bar in Dance Dance Revolution(DDR) in order to complete a song.
That guy always bar rapes when he plays that song.
When your bartender friend is too hungover to show up for work and you are forced to pay commonfolk prices for modestly poured drinks by another barkeep.
Stupid Andrew didn't show up last night and I had to pay $6 per drink! Call the authorities, I've been Bar Raped.