I've Got a New Attitude

Plot:

Willie catches ALF from eating a box of chocolate that was to be a Valentine's Day present for Kate. This incites Willie to give ALF a lecture on how ALF does not respect private property and needs to adopt a new attitude. Also, Kate's mom is moving out of the Tanners' house. The problem is that her new neighbor, Whizzer, wants to come help Dorothy move her stuff. Which means ALF has to hide from him. Kate likes Whizzer and suggests that they invite him over for a dinner. Dorothy doesn't want that. ALF interjects by claiming to have spoken to Dorothy's dead husband ...