laugh on the other side of your face

US /læf ɑn ðə ˈʌðər saɪd əv jʊər feɪs/
UK /læf ɑn ðə ˈʌðər saɪd əv jʊər feɪs/
"laugh on the other side of your face" picture
1.

dégonfler, rire jaune

to be upset or unhappy after having been pleased or confident, especially when something bad happens to you that you deserve

:
He was gloating about his win, but he'll be laughing on the other side of his face when he sees the penalty.
Il se vantait de sa victoire, mais il va dégonfler quand il verra la pénalité.
You might think it's funny now, but you'll be laughing on the other side of your face when you have to pay for the damages.
Tu trouves ça peut-être drôle maintenant, mais tu vas dégonfler quand tu devras payer les dégâts.