oh i see! i thought the draw behind would make the back part of his body which is double sided to clip through but i guess it doesnt draw behind if its the same object
the smile is a plane in front of the cheese wedge. the draw behind works since there's nothing behind the wedge that faces in the same direction. the back faces of the backside don't show since they aren't double sided.
ohhh i figured out what i was confused by it was the orange indent, for some reason i thought that was a texture and it was showing the orange from the back of him sorry for the confusion!