Fortunately, the managers as well as some of the servers on break helped me out and some relief came in at 3. But it was solid busy all the way until I was off at 4, and it didn't seem like it was letting up any when I left around 4:45 (had to finish my last table and do sidework stuff). But I made it through, and it ended up being a good thing since I only had about $20-25 in tips going into the big rush and came out with $85 for the day.
The hardest part was that I got really hungry right when the rush started and was literally shaking for about 10 minutes or so. I didn't have time to eat anything, so I just suffered through and it eventually passed. But I think I'm going to eat like a pig at dinner later on tonight! :P