Years ago I read a poem in a childrens poetry book. From what I can remember, the poem was about a child asking their teachers what they wore for bed.
The final verse was the child asking the french teacher, she said something like "Zut alors! Don't tell anyone but... I sleep in the back bedroom!"
My mum tutted and said it was really inappropriate
So I've wondered on and off over the years as to what it actually means!