to come across something by chance; to confront or land on someone; to happen to someone unexpectedly
Quelque chose pourrait vous tomber dessus, alors soyez prudents.
Something might fall on you, so be careful.
Quelque chose pourrait te tomber dessus, alors sois prudent.
Something might fall on you, so be careful.
Savais-tu que ça allait nous tomber dessus ?
Did you know this was going to happen to us?
Quelque chose pourrait te tomber dessus, alors sois prudente.
Something might fall on you, so be careful.
Quelque chose pourrait vous tomber dessus, alors soyez prudentes.
Something might fall on you, so be careful.
Le magistrat Espósito va lui tomber dessus.
Magistrate Espósito is going to come down on him.
— Dans ses yeux (2009)
Savais-tu que ça allait te tomber dessus ?
Did you know that this was going to happen to you?
Saviez-vous que ça allait nous tomber dessus ?
Did you know this was going to happen to us?
Je viens juste de tomber dessus par hasard.
I just happened to come across it.
— Romance de bureau (1977)