Schwarzfahrer

According to Wikipedia:

A motorbiker boards a tram, and witnesses a black man sitting down next to an elderly white woman. In the entire 12 minutes, the old woman racially abuses the black man, stating they stink, are unintelligent, criminal and the perfect carrier for AIDS. The biker feels uncomfortable, but does not dare to interrupt. The black man stays quiet for the entire film, until the tram controller arrives: when the old woman produces her ticket, he grabs and swallows it. When the old woman accuses the black man for eating her ticket, he coolly shows his valid ticket to the controller; latter nods at him and arrests the old woman. The punch line is that both the black man and the old woman are "Schwarzfahrer" now: the black man who rides a train, is a non-offensive "black rider", while the old woman now is a real law-breaking Schwarzfahrer (i.e. fare dodger).