Help me , someone remember this clip. It featured 2 muppets...1 being a "student" and the other acting like a "teacher". The teacher was trying to teach the other about different shapes, but insisted on drawing (on the screen) an outline of a guitar and fooling around while the teacher was trying to learn this guy something. The only thing i remember from this one is when the teacher says "Do you know what a square is?" The student then replies "I know WHO a square is" with an arrow pointing to his teacher! Someone please help me remember the rest of how this skit went. I was always looking forward to seeing this skit being repeated.