Guest Stars Matt Stone voices Butters Stotch Trey Parker voices Randy Marsh Trey Parker voices Mr. Garrison Eliza Schneider voices Sharon Marsh Trey Parker voices Mr. Mackey Matt Stone voices Gerald Broflovski Mona Marshall voices Sheila Broflovski Eliza Schneider voices Liane Cartman Trey Parker voices Stephen Stotch Mona Marshall voices Linda Stotch Eliza Schneider voices Principal Victoria Trey Parker voices Mr. Tweek John 'Nancy' Hansen as Mr. Slave Eliza Schneider voices Mrs. Tweek