As the subject kindly says, "What’s more difficult to translate than a joke?"
This thread in particular has the objective of finding jokes that survive the translating.
For example:
In Spanish:How to go from Dentist to Neurosurgeon really fast?
With a Sneeze!
As the irrational fear for dentists kicks in (or comes back) the joke remains funny.¿Como pasar de Dentísta a Neurocirujano rápidamente?
Con un estornudo!
So I invite you all to share a joke that makes it, that survives the language barrier, that helps with the ice-breaking at meetings, that may help you in the beginning of a speech that unites us as human beings with sense of humour.