lui tomber dessus
If he admits it outright, let him have it!
S’il l’avoue sans détour, laisse-le faire !
— In the Mood for Love (2000)
But we mustn't let him have it.
Mais il ne faut surtout pas le lui laisser.
— The Lord of the Rings: The Two Towers (2002)
You stand in front of a guy, and you just wanna let him have it.
Tu te tiens devant un mec et tu as juste envie de lui rentrer dedans.
— Once Upon a Time... in Hollywood (2019)
They came looking for me, didn't find me and let him have it.
Ils sont venus me chercher, ne m’ont pas trouvé et s’en sont pris à lui.
— The Secret in Their Eyes (2009)