vanne

floodgate, sluice gate; stopcock

From van.

pointed pleasantry, dig, cutting remark

“Autre moyen de reconnaître un junior d’un senior : le junior dit des blagues drôles qui ne font rire personne, alors que le senior sort des vannes pas drôles qui font rire tout le monde.” — Another way to tell a junior employee from a senior one: the junior tells funny jokes that no one laughs at, while the senior tells unfunny jokes that everyone laughs at.

From vanner.