I played an MP match and after it was over one of Gary's SP dialogs appeared, overlaying the Victory screen, at the top. It contained this text: "And the sodas are gone too! I guess we could drink this mineral water stuff. Who buys water? Weird." I've seen a bit of Gary's dialog appear after an MP match once before, months ago, don't remember if it was the same one. I also remember someone else once mentioning seeing it. The match log is included. Nothing unusual happened in the match itself.