Tricky riddles with simple answers

A clerk in the butcher shop is 5 feet, 10 inches tall. What does he weigh?

What is the center of Gravity?

If you drop a yellow hat in the Red Sea, what does it become?

It's 7:00 am. You are asleep and there is a sudden knock on the door. Behind the door are your parents, who came to have breakfast. In your fridge: bread, pasteurised milk, juice, and a jar of jam. What will you open first?

As I was going to the mall I met a man with seven wives. Each wive held two bags, each bag held a mother cat, each mother cat had six babies, How many people were going to the mall?

What rock group has four men that don't sing?

There was a railroad crossing without any cars and trucks! Can you spell that without using any "R"?

David's father has three sons : Snap, Crackle and _____ ?

Four children and their pet dog were walking under a small umbrella. But none of them became wet. How?

A woman with no driver license goes the wrong way on a one-way street and turns left at a corner with a no left turn sign. A policeman sees her but does nothing... Why?