I used to live around the corner from the Wicker Park Veggie Bite
—the second location of a vegan minichain
that originated in southern California and then expanded to Mount Greenwood—and every time I walked by I'd notice the grammar error in a sign promoting their Italian beef sandwich (with fake meat, of course): "Meat Has Met It's Match." It bugged me enough to take a picture of it, though I didn't know what I'd do with the photo.
Now the restaurant is closed (as is the Mount Greenwood location; I can't find any information on the one in California) and a new outpost of Al's Italian Beef is moving into the space. I'll admit to not knowing the exact definition of irony (though at least I'm in good company), but I think this may be it.