A Day at the Races and a Night at the Opera
S1:E11
1994
IMDb
After Marty fails to win an event at his school field day, he is feeling very low so Jay tries to improve his self-confidence by getting him interested in playing guitar and putting him in the school talent show. Meanwhile, Them Magazine names Jay "the wittiest man alive" so Duke offers to pay everyone who doesn't laugh at Jay's show $100 which doesn't go over very well.