How Do You Use A Jar of Peanut Butter?

BesidesPDX posted this picture of a peanut butter jar at reddit and said, "I know I'm not the only one." I must have missed that Calvin and Hobbes strip, although I read it most days. And I have never heard of anyone using peanut butter like this. While most commenters also had never heard of such a thing, a few said they always tried to eat as much peanut butter as possible without disturbing the smooth surface on top. Megamanfre does the same thing a slightly different way. He's not the only one.

Have you ever done this? Have you even heard of it? Will you start doing it now because of this post?