Answer:
What is easy to get into but hard to get out of?
I am what no man ever yet did see, which never was, but always is to be. What am I?
I'm the source of all emotion but I'm caged in a white prison.
The last man on Earth received a phone call, who was the caller?
I am expelled from you orally with a sound
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.