Aprez Vous! Aprez vous!
After you! After you!
The very first line in this note is French, following which is its Engish version.
If we open the door for others, we may say "After you!". This sounds very polite, but it is actually sort of kidding. For instance, my manager always say "After you" when he opens door for me.
Usually, I just say "go ahead" when I open the door for others.