Mysterious Signage

So on the corner of 50th and 7th there's one of those scary combo KFC/Pizza Slut/Taco Bell places. I guess these combo ventures kind of make sense -- taking advantage of economies of scale and swapping supplies and all that. When the taco-makers run out of bird parts for the Ranchero Chicken Soft Taco, they can just bop over to the Colonel's prep counter and steal a couple Boneless Fiery Buffalo Wings to substitute. (How is a "wing" boneless? That chicken must have had a hell of a time trying to get any happy flapping done in the expansive green pasture in which it was undoubtedly raised.)

ANYWAY, today I caught a glimpse of some kind of avertising sign in the window of this place. It read as follows: "IT" started here. (Quotation marks theirs.)

What do you suppose "IT" is? Trichinosis? The institutionalized use of pulled, reconstituted and pressed animal parts? Your last bought of explosive diarrhea? Internet technology? You got me.