A Capuchin monkey owned by Milhouse Van Houten, which was accidentally bought from Trader Pete's alongside a wicker basket from Paraguay (according to Milhouse, they were intending to just get the wicker basket, and discovered the passed-out monkey encased inside after purchasing it), was responsible for giving Bart head lice, which was discovered during class photo day at the school. As a result of this all of his clothes were disposed of in the school furnace.

Behind the laughter

  • In the original airing, Milhouse claimed that he got the monkey and wicker basket from Pier One, but it was changed to the fictional Trader Pete's after Pier One complained about the joke, although some versions air the original line.