"the joke is on" in Chinese (Traditional)
Definition
這個表達表示原本想嘲笑別人的人，結果變成了被嘲笑的人。情勢逆轉，笑話成了他的。
Usage Notes (Chinese (Traditional))
常在惡作劇或玩笑反而讓發起者尷尬時用。常說"the joke is on you"，用來指明誰成了笑柄，常見於非正式或幽默場合。
Examples
He tried to make fun of her, but the joke is on him now.
他想嘲笑她，結果現在**成了笑柄的是他**。
If you laugh too soon, you may find the joke is on you.
你笑得太早了，可能會發現**笑話落在你自己身上**。
At the end, the joke is on all of us.
最後，**成了笑柄的是我們所有人**。
You set up a prank for your friend, but somehow the joke is on you when everyone starts laughing at your mistake.
你本來設計陷害你的朋友，結果到頭來大家都在嘲笑你的失誤，**成了笑柄的是你**。
When the cat escaped the pet trap you set, the joke is on you because now it's your mess to clean up.
當你給貓設陷阱卻讓貓跑掉，**成了笑柄的是你**，因為現在輪到你收拾殘局了。
They thought they could trick the teacher, but in the end, the joke is on them as they had to stay after class.
他們以為能騙老師，結果最後**成了笑柄的是他們**，因為他們不得不課後留下來。