Answer:
What occurs four times in every week, twice in every month, only once in a year but never in a day?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Mouth up it gets filled, mouth down it gets empty.
Hearing something unexpected or touching a live wire can have this effect.
What is the end of everything?
What did the piece of wood say when he saw the screwdriver and screws approaching?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?