Situation: Your nephews are shouting a lot while they play and you cannot watch TV in peace. Your patience snaps and you angrily ask them if they would mind shutting up.

Interpretation of the utterance: Imperative yes-no question

Informator: S. P.

Utterance: Vautres podetz pas vos taire?

Translation: Couldn't you shut up?
[You can(present, 2nd plur.) not (reflexive pronoun) shut-up?]