The city's toughest women are pulling out the big guns for this rowdy fund-raiser. If you think you've got the skills, thrown down with the Denver Roller Dolls for an all-female arm wrestling competition. Or relax and watch the action while sipping on Phat Thai cocktails and listening to music spun by DJ Magic Magee. Proceeds support Big City Mountaineers,which helps mentor under-resourced urban youth through outdoor adventures. Fri 9 p.m.