Answer:
Come up and we go, Go down and we stay.
Mouth up it gets filled, mouth down it gets empty.
Which one of Santa's reindeer can be seen on Valentines day?
Rotten trees and Jack-O-Lanterns have this characteristic in common.
Before Mt. Everest was discovered as the highest mountain in the world, which mountain was the highest?
I am a room that has a roof but no walls. What am I?