Apparently window air conditioning units don't need windows anymore. Maybe they're actually sucking cool air from the restaurant into the hot kitchen. Or maybe they're just dumb. Whichever is more likely.
My first thought when I saw this was "where are they going to keep the beer?" Then I remembered, "oh right! They're in college, they don't have alcohol standards! Silly me!"
"Used the dead grill that I kept around, cause you never know when your gonna need a dead BBQ as a stand for the A/C. And cinderblocks, of course."