Triangles or Squares?

I have to ask the boy EVERY DAY how he wants his sandwich cut, because it changes daily. Today he said he wanted BOTH! He was very insistent that one sandwich COULD in fact be cut into both triangles and squares, so he left it to me to figure out how. It cracked me up, so I had to take a picture of it. I don't know how he could possibly already have jelly on his face, since he had not bitten into his sandwich yet! =)