S1, E2: Grandpa finds an ancient book of recipes ...including one for the "Love Potion". He mixes up a batch and the next morning he secretly spikes Marilyn's oatmeal, who is running late for work and leaves without breakfast. Lily empties her breakfast back in the pot and serves it to the rest of the family. Afterwards Lily and Herman find themselves the unwelcome targets of amorous advances made by their nosy neighbors.