Answer:
You can drop me from the tallest building and I’ll be fine, but if you drop me in water I die. What am I?
Some try to hide, some try to cheat, but time will show we always will meet.
I am the only word that looks the same when spelled upside down.
What goes through a door but never goes in and never comes out?
What gets sharper the more you use it?
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.