Episode 12 of "Grounded for Life"
s01e12 Jimmy Was Kung-Fu Fighting

Sick of not being able to afford a real vacation, Sean and Claudia take on extra work shifts to pay for an all-inclusive Cancun trip. Claudia is upset to learn that Jimmy has been having a rough time with the school bully, Kyle. When Lily defends Jimmy, Kyle and his friends torment Jimmy even more. Lily herself is subjected to ridicule for beating up an 11-year-old. To prove she's cool, Lily gets her tongue pierced. Sean pleads with Sister Helen to put a stop to Jimmy's torment. Reluctantly, Sister Helen confronts Kyle, but she makes the matter worse. A desperate Jimmy seeks help from Eddie, who teaches him kung-fu moves. In a "Crouching Tiger, Hidden Dragon" sequence, Jimmy fantasizes using kung-fu kicks on Kyle and his cronies. Meanwhile, with Claudia working at night and Sean make his box macaroni and cheese every night, Henry resorts to digging through restaurant trash and begging for food.