I don't get why, but it's an umbrella
A chimney.
an umbrella
an umbrella
Smoke
Smoke
An umbrella.
What may go down the chimney up but not down the chimney down?
The answer to the riddle "What goes up the chimney down but can't go down the chimney up?" is an umbrella. When an umbrella is closed, it can be pushed up the chimney, but when it's open, it cannot fit down the chimney. This clever play on words highlights the contrasting states of the umbrella.
An umbrella
An umbrella! It can go up a chimney when it's down because it's thin but cant go down a chimney up because its too big!
An umbrella !
An umbrella could.... but would? doubtful!