Five friends pile into a station wagon on their way to LA. An hour into the journey, the person in middle back yells at the driver for being gay, because they heard gays are slow drivers. Right back and passenger seat are very concerned that this might slow down the journey, so they tell the driver to pull over and debate the issue. Six hours later, the group comes to a consensus: gay people probably aren't slow drivers, but the gay person is going to have to swap with left back just to assuage middle back's fears.

Left back (now the driver) is a vegan. Two hours later, middle back says vegans are slow drivers.