> his moth joke [0] and the professor of logic joke [1]
You may already know this, but those are his versions of old street jokes. Comedians often fill time with short street jokes that have been told for decades (often to connect between longer bits), but Norm is one of the few who decided he would stretch one to fill an entire interview.
He also filled an entire Comedy Central Roast appearance with mundane jokes that he took from one of those silly "101 Jokes" books. Many of the jokes were so out of date they made puns on tech that is no longer used (like some joke that depended on the audience understanding that "Underwood" was a popular typewriter company back in the day.)
Somewhat related-- there's a video somewhere of Andy Kaufman essentially throwing an entire Saturday Night Live audition. He does a nervous recitation of a long, shitty monologue based on lyrics from a crappy 70s pop song, repeats it twice (making exactly the same mistakes each time), then recites the opening to the old Superman tv show in a purposely bad southern accent. Norm obviously did his pranks in an attempt to entertain an audience, but I cannot figure out what Kaufman's motive was in his audition. In any case, I found it hilarious and Norm was obviously greatly influenced by a lot of Kaufman's stuff.