Though most believe it to be made of cheese, the moon is actually a stray golf ball, a sober reminder that Paul Bunyan really needs to take the heat off of his short game. Prevent planetary putting mishaps with today's Groupon: for $50, you get a custom driver fitting with a launch monitor at Klees Golf Shop on South Western Avenue (a $100 value).

When not overseeing the goings-on of their century-old South Side pro shop, Klees’ wizened turf-tenders keep balls aloft and courses divot-free thanks to their driver fittings. During the custom calibration (which lasts from 45 minutes to an hour), daring drivers will seek out their steel and titanium soulmates, testing swings and putts on a host of driver heads and shafts from name brands including Fujikura and Oban. Under the watchful multi-lensed eyes of the Vector Pro launch monitor, each shot is logged in a personalized database that charts club performance and swing-by-swing equipment averages using easy-to-understand graphic interfaces and memorable rhyming couplets. The Vector Pro Analysis Screen's "What If?" modeling also lets fairway investigators adjust results based on their choice of variables, taking into account launch angle and spin. By the fitting's end, golfers will have gained insight into their equipment needs, uncovering the path to chipping down handicaps and winning back the house in a round of high-stakes putt-putt.