Shit
Explanation
The Joke
A linguistics enthusiast is excitedly explaining how the word "shit" can function as nearly every part of speech. It can be a noun, descriptor, verb, exclamation, and much more — "shitty, shitfaced, shittily, can shit, can be shit." They declare it's a "complete and closed language" consisting entirely of variations of "shit" — "shit shit shit shit shit shit shit shit."
Another character asks "Who cares?" but the enthusiast reveals they went into linguistics to advance human knowledge, and this is their thesis.
The Humor
The comic plays on the genuine linguistic versatility of profanity — the word "shit" really can function as almost any part of speech in English, which is a well-known observation in linguistics. The humor comes from the escalation: what starts as a mildly interesting linguistic observation is taken to its absurd logical extreme, with the character claiming it constitutes a complete language. The final punchline — that this is their academic thesis — satirizes both the niche obsessiveness of graduate research and the gap between academic rigor and practical value. The joke also plays on the inherent comedy of someone being passionately scholarly about the word "shit."