Answer:
I can be swallowed, but I can also swallow you. What am I?
I was not born but I am here. I have no name but I am given many. I was made by science and life
I can swim but never get wet. I can run but never get tired. I follow you everywhere but never say a word. What am I?
I go up and down at the same time. Up towards to sky and down towards the ground
I am not a toy though many use me for pleasure. I have a butt but I cannot poo.
No matter how little or how much you use me, you change me every month.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic