MASH FLOB: Every third Thursday of the month the Museum of Contemporary Art turns the concept of a flash mob inside out by giving you a chance to collaborate with professional artists to create participatory "happenings." Join in the fun or sit on the sidelines as a voyeur, which we're guessing is not nearly as much fun. Tonight, Industry of the Ordinary transforms the MCA Plaza into a court for a primitive game of "football." 6-7 pm, 220 East Chicago Ave, FREE
CLASS TUESDAYS: Crimson Lounge's weekly Tuesday night party presents the "Glamboy Invasion," featuring a special DJ set from Pinkmachine, creator of the local record label "Glamboy Musique." Prepare for an eclectic set of new electro-house, techno and classic Italo-inspired music. 9 p.m., 333 N. Dearborn St, NO COVER
ROCK YOUR BODY: Hanging out indoors sounds perfect on such a The popular BODY WORLDS exhibit returns the Museum of Science and Industry this weekend. The 14,000-square-foot exhibit takes guests on a journey of self discovery with more than 200 real human specimens, including 20 whole-body plastinates that show the body as it changes, grows, matures, peaks and finally wanes. Through Sept. 5, 57th Street and Lake Shore Dr
