Party Animal/Ipso Fatso/Don't Yank My Chain - S1-E2
Other mistake: Don't Yank My Chain: When Handy and The Mole are in the jail cell, the cell door has hinges. Then, when they walk out of the cell before being pulled back in, the hinges are missing from the cell door. The other cell door in the background is also missing its hinges. (00:16:02)