I have discovered that one guy is mayor of 52 locations in and around our town, including nearly every store in a particular shopping center. I wasted some time researching that, and figured out that if you just take the seven restaurants he's mayor of in that shopping center, he has checked into them 132 times in 60 days. So he eats pretty much every meal in those places, plus snacks.
Or he's a cheater who does "drive-by check-ins," which Foursquare discourages, but apparently can't prevent altogether.
I will destroy him. (Haven't figured out how yet.)
See, my first thought is that he is a mall security guard, or one of those people who cleans up trays in the food court. So, yeah, you could get a job at that mall. Then you could work side by side, bond with him, get to know all about his life and share some common interests. Maybe the mall has a movie theatre, and the two of you could go check out the latest shit movie just so you could trade smart quips about how shitty the movie is. Over time you could hear all about his children and his wife and dreams for the future. Maybe you could even share things you've never shared about yourself and let him see the inner-most part of your spirit. You could create an inside joke about that one cashier with the big jugs at Jamba Juice that only the two you you would understand, and it would come to a point that, with only a glance, you would each know what the other is thinking.
Then you could slit his throat in the bathroom while screaming "who's the fuck*ng mayor now, Pedro?! Who's the fuck*ng mayor!!?"