Hello. This is your weekend call. Kindly get your ass in gear. SEEK Watson Adventures’s Naked at the Art Museum Scavenger Hunt What: Follow funny clues in a competitive search for nudes in artwork. Why: Give it your breast shot. When: Sat., 2 p.m. Where: Art Institute of Chicago, 111 S. Michigan Ave., at Monroe St. Advance tickets required; available online at ovationtix.com. Details at 877-946-4868. SAVE SpaForever Anniversary Promotion What: Bucktown spa marks its first year by charging just $59 for any service (facial, massage, more) for the first 500 callers. Why: Cheer for a year. When: Starts Fri. Where: 1917 N. Damen Ave., b/t Homer & Cortland Sts. (773-394-0000). SHOP The Needle Shop Fabric Store Grand Opening What: Sewing school/shop expands to two stories with $1/yard off all fabrics. Why: It keeps you in stitches. When: Opening party and sale, Sat., 10 a.m.-6 p.m. Regular hours, Mon.-Thurs., noon-8 p.m.; Sat. & Sun., 10 a.m.-6 p.m. Where: 2054 W. Charleston St., at Hoyne Ave. Intermix What: Tax-free shopping days! DailyCandy readers who spend $300 or more get a $50 gift card toward their next purchase. (Print this e-mail and show it at checkout.) Why: It won’t be taxing. When: Thru Sept. 1. Where: 40 E. Delaware Pl., at Wabash Ave. (312-640-2922); 841 W. Armitage Ave., at Dayton St. (773-404-8766); 1633 N. Damen Ave., b/t North & Wabansia Aves. (773-292-0894). CHALLENGE Thumb Wars What: You like your sports fast, easy, and played with total strangers. Why: One, two, three, four. When: Lunch break. Where: At work with Chuck from accounting.