Answer:
It is the great nemesis of the lactose intolerant.
I am so simple that I can only point. Yet I guide men all over the world.
A caribbean shape that makes ships disappear
I have it, I don’t share it. If I share it, I don’t have it. What is it?
When the day after tomorrow is yesterday. Today will be as far from Wednesday. As today was from Wednesday. When the day before yesterday was tomorrow. What is the day after this day?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?