Bodies colliding at high speeds. Bruises, bumps, and (occasionally) broken bones.

While the above description may evoke thoughts of the NCAA Men's Basketball Tournament, Bobble Tiki is actually waxing roller derby - and specifically Dockyard Derby Dames' season 7, bout 2 Saturday at the Pierce College Health Ed Center. These tough-as-nails women (professionals, school teachers, nurses, Bobble Tiki face slappers) love nothing more than strapping up the old skates and doling out some punishment on the rink.

Saturday's bout will feature the losers from the season opener - The Trampires and Femme Fianna squaring off, followed by the two winners - Hellbound Homewreckers and Marauding Mollys - battling. Throughout the action on the floor, a cast of characters - from the two funny announcers, to team mascots to the arm punchers in the beer garden - add to the awesomeness. Bonus: The bout sponsors the Children's Therapy Center!

PIERCE COLLEGE HEALTH ED CENTER, 5 P.M., $12 ADVANCE, $15 DOOR, $25 VIP, 9402 FARWEST DR., LAKEWOOD, WEBSITE

Follow Bobble Tiki on Tumblr. Someone should.