on the buttocks
Quelqu'un a voulu me mettre une casserole aux fesses.
Someone tried to put a saucepan on my butt.
— The Tall Blond Man with One Black Shoe (1972)
C'est mieux que de cavaler avec les poulets aux fesses.
It's better than having the cops on your tail.
— Serie Noire (1979)
Are you going to have the bomb up your ass?
— Le Salaire de la peur (1953)
On a eu un peu chaud aux fesses, là.
We had a bit of a close call there.
— Le Cercle des neiges (2023)