What happens at 99:99?

I was just wondering, what happens after 99:99? I mean, the timer box doesn't look like it could fit more than 4 digits, so does it just expand, or does the number glitch out, or does the game just end? Has it ever even happened before? I mean, it'd be kinda funny if the game just ends and says "Tie" instead of "Victory" or "Defeat." Or maybe it just says "Leave" for everyone, I don't know. If anyone has any idea what it may do, that'd be... well, unhelpful since it does absolutely nothing, but it will satiate my curiosity! so yeah kthxbai