“Grampa vs. Sexual Inadequacy” is the tenth episode of Season 6. It aired on December 4, 1994. The episode was written by Bill Oakley and Josh Weinstein and Wes Archer directed.
Homer and Marge are having a troublesome sex life until Grampa introduces Homer to a home remedy love tonic. They soon go on the road together, trying to make some money off Grampa’s potion. All the while, all the adults in Springfield are taking advantage of their new love lives, leaving the children thinking that UFO’s are to blame.