Shamboo!
Frankenstein: Witch can you make me a lemonade?
Witch: Poof you are a lemonade!
or
The barman says "Sorry we don't serve food in here"
or
Nearly unanswerable, since the one who tries to change it usually drops it, and the others call for a planning session.
or
Nothing, peanuts don't talk.
or
Fish and ships.
or