Teacher Earl - S1-E5
Continuity mistake: Randy gives Earl his safety deposit key back. The screen switches to Randy, and then back to Earl, except where there used to be a safety deposit key on the napkin in from of him are now 3 safety deposit keys, and rearranged for that matter. After another screen switch between the two, the 3 keys get rearranged again. (00:20:30 - 00:21:10)
Answer: Sounds like s04e11, "Nature's Game Show."
Bishop73