On a merry-go-round or fairground carousel.
You are driving a car. On your right is a steep cliff. In front of you there is a horse and right behind is an elephant, both of which travel at your own speed. On your left there is a fire truck blocking you. How do you stop your car?
There are 2 ducks in front of 2 other ducks. There are 2 ducks behind 2 other ducks. There are 2 ducks beside 2 other ducks. How many ducks are there?
A man takes a basketball and throws it as hard as he can. There is nothing in front, behind, or on either side of him, and yet, the ball comes back and hits him square in the face. How can this be?