Mork & Mindy (1978)

S03E05 Mork the Prankster

Mindy decides to show Mork the art of practical jokes, but he struggles to grasp the concept of pranking. Following a particularly botched attempt, Mindy chooses to move in with Glenda Faye for a spell. While staying there, Glenda encourages Mindy to reconsider and take Mork back.