Hilarious jokes-Three hundred years old

There is a guy who arrives to a town in western Spain, he seems like a charlatan and begins to advertise a potion, which supposedly keeps him young despite the fact that he is three hundred years old.

A farmer, having doubts, approaches one of his assistants.

"Hey, is it really true that this guy has lived three hundred years?"

"I don't know, I have only worked with him for two hundred."