How good are mathematicians at telling a joke?

You may have wondered how good mathematicians are at telling a joke.

Here’s mathematician Henry Segerman telling a topology joke — the one about the coffee cup and the donut:

Here’s another mathematician, Ian Agol, telling the same joke (filmed by Scientific American.)

Here’s Jim Fowler making the joke wordlessly:

Three anonymous, shy mathematicians make the joke wordlessly (but for a cough):

And here, probably destined to be most famous of all, is the presentation in Stockholm of the parable of the cinnamon bun, the bagel and the pretzel:

BONUS (distantly related): A presentation of the möbius bagel-cutting principle, with added lox, by Eugenia Cheng: