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.
2 years ago (+1)
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!