<Tr> <Td_colspan="4"> Eric Cartman tries to sing O Holy Night . Whenever he forgets the words, Kyle pokes him with a cattle prod . </Td> </Tr> <Tr> <Td> "Chef Aid: Behind the Menu" </Td> <Td> April 29, 1998 (1998 - 04 - 29) </Td> <Td> The Chef Experience </Td> </Tr> <Tr> <Td_colspan="4"> A Behind the Music - style promotional video for Chef Aid: The South Park Album, featuring interviews with Flea, Elton John, Meat Loaf, Ozzy Osbourne, and others . Also contains the music video for Master P's single "Kenny's Dead", from the same album . </Td> </Tr> <Tr> <Td> "Chocolate Salty Balls" music video </Td> <Td> 1998 (1998) </Td> <Td> The Complete Second Season The Chef Experience </Td> </Tr>

When does the next south park episode air