S3, E6: While the whole basement bunch meanly joins in with the school–wide ridiculing of poor Kelso, who made a painful fall in the canteen hurting the inside of his soiled trousers, constantly calling him 'Tater Nuts', Eric worries only about Donna's expected jealousy when he is seen in the diner with his lab partner, school slut Shelly, and when Donna is confidently cool about it feels offended, yet Jackie's assurance Eric is too girlish to cheat on her no longer holds when panties are found in Eric's car...