Incomprehensible math jokes:
Q: What is lavender and commutes?
A: An Abelian semigrape.
Q: What’s yellow, linear, normed, and complete?
A: A Bananach space.
Q: What’s the value of a contour integral around Western Europe?
A: Zero, because all the Poles are in Eastern Europe.
Q: What do you get when you cross a mountain climber with a mosquito?
A. Nothing: you can’t cross a scaler with a vector.
Q: What’s hot, chunky, and acts on a polygon?
A: Dihedral soup.
Q: What sound does a drowning analytic number theorist make?
A: “Log log log log …”
Q: What’s sour, yellow, and equivalent to the axiom of choice?
A: Zorn’s lemon.
“Mathematicians are like Frenchmen,” wrote Goethe. “Whatever you say to them they translate into their own language, and forthwith it is something entirely different.”