A great Reddit thread asked readers for their favorite "intellectual" joke -- some of the high-ranked ones are really good!
Q: What does the "B" in Benoit B. Mandelbrot stand for?
A: Benoit B. Mandelbrot. (balloseater)
It's hard to explain puns to kleptomaniacs because they always take things literally. (Watch_Closely)
I'd tell you a UDP joke, but you may not get it. (ambivalist)
I prefer IP jokes; it's all in the delivery. (ianschenck)
I could tell you a joke about TCP, but I'd have to keep repeating it until you got it. (Razakel)
Werner Heisenberg, Kurt Gödel, and Noam Chomsky walk into a bar. Heisenberg turns to the other two and says, "Clearly this is a joke, but how can we figure out if it's funny or not?" Gödel replies, "We can't know that because we're inside the joke." Chomsky says, "Of course it's funny. You're just telling it wrong." (Saboot)