English Dictionary

the joke is on someone

phrase

(idiomatic) Someone is the butt of a joke or is experiencing a negative outcome, especially if that person was trying to make someone else the butt of the joke or subject them to the negative outcome.

The joke is on him.

意味（1）

(idiomatic) Someone is the butt of a joke or is experiencing a negative outcome, especially if that person was trying to make someone else the butt of the joke or subject them to the negative outcome.

As only a small per cent of the dealers use the word Leghorn, and the ones who do try to use it can't tell a Leghorn from a mixed breed or from many other breeds, the most of the joke is on someone else.