profound
Explanation
The Joke
A distinguished-looking man stands at a podium on a grand stage, thanking the audience for the introduction. He then delivers what sounds like the setup to a profound literary remark: "And hey, you know who profoundly moved ME last night?" The answer: "YOUR MOM." The caption below reveals that it took him 39 years to become the Poet Laureate, and it was worth every second.
The Humor
The joke works on the collision between extreme prestige and juvenile humor. The Poet Laureate is one of the highest honors in literary culture, and the setting -- red curtains, formal podium, distinguished audience -- signals gravitas. But the laureate uses this hard-won platform to deliver the most immature joke format imaginable: a "your mom" joke. The double meaning of "profoundly moved" (emotionally stirred vs. a sexual innuendo) makes the punchline work on both levels. The caption adds an extra layer by implying that the entire 39-year literary career was just an elaborate setup to deliver this one sophomoric joke from the most prestigious possible position.
References
The Poet Laureate is an official position in several countries (notably the United States and the United Kingdom) where a distinguished poet is appointed to compose works for national occasions. The title carries enormous cultural weight, making it the perfect contrast for a "your mom" punchline.