 The kids begin to suspect each other and plot to discover who had the lice in order to both evade and humiliate them.Cartman eventually devises a test to tell who had head lice (a parody of the blood test in the 1982 horror film "The Thing", something even Kyle points out and calls Cartman out on), and rigs it to frame Kenny, whom he assumes has lice because of the fact he is poor and therefore has bad hygiene - according to Cartman only poor people get lice.Kenny flees the room, and Clyde is somewhat sympathetic yet relieved.