He's a guy who does not have ears at birth. He goes to an ear transplant. This one shows him a catalog of ears. He thinks for a long time and finds the pair he likes. The specialist tells him to come back in fifteen days. He comes back and complains:
- Doctor, I have a problem with my ears: I hear but I do not understand.
The doctor :
"Ah, excuse me, it must have been the woman's catalog.