"Fifty-seven years in this business, you learn a few things. You know what words are funny and which words are not funny. Alka-Seltzer is funny. You say 'Alka-Seltzer', you get a laugh... Words with 'k' in them are funny. Casey Stengel, that's a funny name. Robert Taylor is not funny. Cupcake is funny. Tomato is not funny. Cookie is funny. Cucumber is funny. Car keys. Cleveland... Cleveland is funny. Maryland is not funny. Then, there's chicken. Chicken is funny. Pickle is funny."
Joker: What is it about the sombrero? Some words are just naturally funny.
According to Dave Barry, "doot", "weasel", and "Smoot-Hawley Tariff".
I'm at home, sitting in front of my computer in my underwear, trying to decide which animal name is funnier, 'hamster' or 'gerbil.'" ("Answer: 'weasel.'")
It's Always Sunny in Philadelphia, a show known for its willingness to use the word "shit", has an episode in its fourth season called "Who Pooped the Bed?", where "shit" is scarcely used. Lampshaded, even.
The inherant hilarity of "gurt" is a Running Gag in Echo Chamber; it starts when Ace makes a video about portmanteaus, including separating "yogurt" into "yo" and "gurt". He keeps cracking up whenever he says "gurt", and later the word merely being mentioned is the only thing to get Mr Administrator to laugh, leading to the first time we see more of his face.