Right, I just did a test. You can just keep throwing the chop and picking it up over and over again, getting more and more points. It also makes the dog glitch and do the moonwalk sometimes.
Interestingly, I think the score maxes out at 255 or something before going back round to 0. Just now I did the chop trick until I got bored, then went on to finish the game and realised my final score is 25!
