Answer:
I can be short and sometimes hot. When displayed I'm never cold. What am I?
Whoever makes it, tells it not. Whoever takes it, knows it not. Whoever knows it, wants it not. What am I?
I am commonly abbreviated to H
I lose my head in the morning and regain it back at night. What am I?
I am a daily ritual involving using a metal tool on the body
What did the piece of wood say when he saw the screwdriver and screws approaching?