Alvin & the Chipmunks - S01EP06 Unidentified Flying Chipmunks/Mother's Day

Trying to capitalize on the popularity of the movie "E.T.", the chipmunks dress Theordore up as an alien. But things don't go as planned. The boys are disappointed they don't have a mother to go to the mother/son picnic with them, so each of them choose a woman for Dave to marry.