You need to tape two sheets of paper together and do enough housework that you can actually get it flat on a worktop or table. Putting it on the carpet is a no no.
Then you need to tip some sugar on it. Salt will do. It has to be dry.
The ripples on the paper is the sugar. Should have found some yellow sugar so it would photo better.
Set the square ended boat shape down at one end of the sugar
Put your fingers in it to stop it riding up and then push it along....
This creates a wave in front of the boat and a line down each side....
If that was in water, you would be pushing that wave along and moving the rest of the water out to the sides as you pass.
This is the equivalent to dragging a long a barrel of water and of trying to push gallons sideways by half the width of the boat each yard you move. The water would come back after you pass, but you still have to pay the energy to move it in the first place.
Note that the sugar wave also built up high enough to come over the front of the boat. We will look more at that later.