joke

[vova_xix_v]

the joke is on (sb) (joke's on (sb))

If you say that the joke is on a particular person, you mean that that person has tried to make someone else look silly but has made himself or herself look silly instead.

як це перекладати?

[zoria]

the joke is on you = ти спіймав облизня; ти пошився в дурні?

Collins: If you say that the joke is on a particular person, you mean that they have been made to look very foolish by something.

тобто - the joke is on you = ти себе ж дурнем і виставив, на свої ж граблі наступив?

[sikemo]

показати себе у дурному світлі?