On Seinfeld, Elaine bought Boggle for Adam Lippman’s bar mitzvah. The gift is mentioned in the season-nine episode “The Serenity Now,” where Adam is the son of Elaine’s former boss, Mr. Lippman.
The Boggle present becomes part of the episode’s comic tension because Adam is dissatisfied with it. He confronts Elaine at the celebration, kisses her, and loudly insists that he is now a man. Elaine later rejects his romantic interest, arguing that the bar mitzvah does not make him mature enough for her.
Boggle is a word game in which players form words from letters arranged in a small grid. It was introduced by Parker Brothers in 1972 and became a familiar household game in the United States. The joke works because Elaine apparently treats a major religious milestone as an occasion for an ordinary children’s game rather than a more memorable gift. “The Serenity Now” aired in 1997 and also features George’s computer-business meltdown.