Easy Pickin's - S6.E4

The gang is impressed with the number of material items Steve and Claudia have, giving them the impression they're rich. However, when Fat Albert investigates, he learns the twin siblings are routine shoplifters, stealing the various items from department stores and selling them to other kids. Fat Albert later notifies their parents, who indeed find some of the stolen items in their rooms. The twins think they'll never be caught. But when a stockboy is arrested, accused of being the thief, they feel guilty and confess their crimes to the store manager.