Chipotle Manager Who Photobombed Mitt Romney Speaks: 'It’s a Facial Expression I Do When I’m Excited' Neetzan Zimmerman · 10/03/12 10:35AM 20-year-old Marty Arps was just a run-of-the-mill branch manager at a Denver-area Chipotle until a close encounter with Mitt Romney propelled him to Internet superstardom.