The joke “The Aristocrats” is a standard launch pad for comedians. The intro and punch line are standards, but the middle part of the Aristocrats joke gives a comedian a chance to be as raunchy and disgusting as they possibly can.
See here for videos of famous people telling “The Aristocrats” joke.
Watch this one, by the twisted genius Trey Parker of South Park, the king of raunch . . . .
WARNING – Contains naughty words and vulgar suggestions