The Simpsons Season 20 Episode 18

Having burned his tongue and rendered it extra-sensitive to taste Homer samples the bland food at the school cafeteria where he also sees for himself that Bart is a hopeless scholar and Lisa a social outcast. He decides to be a good father by teaching Lisa how to be a popular socialite and helping Bart build a model of Westminster Abbey for his class project. Both ventures fail,though at least it has helped the kids find their own level and there are compensations for him in the sauna that Marge has recently discovered in the basement.