No More Mr. Dumb Guy is episode 13 of season 3 of Full House.
Summary[]
Jesse is invited by Becky to a literature soiree, but he declines, believing that his lack of formal education wouldn't serve him too well among the other guests. Later, when Jesse feels threatened by a handsome and apparently flirtatious former professor of Becky's, he shows up at the event with an attitude that just might destroy his relationship with his girlfriend.
Danny is thrilled when a co-worker graciously accepts his invitation for a dinner date, and D.J. and Stephanie live to regret bringing their little sister into the verbal insult business.