There are two good options for where to enjoy your post-victory or lamentation meal – the campus dining halls or one of the fine local food establishments, accessible by foot (Eddy Street Commons) or car (pretty much everywhere else). Decide which will hit that post-game sweet spot, and then plan ahead! Did you forget that there are over 80,000 people on campus on game days? A little pre-emptive planning will save you a big headache when sitting in traffic or waiting in line for your much-needed food.
Wait it out: if you can make it a few hours without eating, the crowds, both on campus and off, will be infinitely smaller and getting around by foot or car will take less than half the time. And if you're planning to enjoy your meals in the dining halls, pay for your dinner earlier in the day at either dining hall and then just make sure to bring your ticket with when it's time for dinner. Not having to wait in the cash register line will save you and/or your guests tons of time.
Call ahead: If you're checking out a local eatery, see if they take reservations. If so, make one, but if you're planning to leave right after the game, give yourself at least an hour and a half to get there. Traffic really is that bad.
Avoid Douglas Road at all costs: Traffic gets re-routed so it's a one-way street and it takes longer than your brains can bear to get anywhere. Side streets are your best bet. Even if you don't know where you're going, keep yourself situated in terms of main roads like Douglas, Edison, Ironwood and Michigan and you'll be fine.
The restaurants at Eddy Street Commons: They are totally convenient. But they will be packed for hours after the game is over. Just keep that in mind.