Answer:
I take off my clothes when you put on your clothes. I put on my clothes when you take off your clothes
What is the saddest fruit?
I go through a door but never go in and never come out.
I am constantly overlooked by everyone but everyone has me. What am I?
The more you look at me The less you see.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.