The Hellgate Rollergirls host the inaugural Naughty and Nice Rollerball down at The Inferno (HGRG warehouse). Strap on your xxx-mas sweater, perhaps a bawdy gown or a suit made out of a wooden barrel. Booze, derby awards, karaoke, a very derby Santa. Oh word. 812 Toole Ave. 9–1 AM. $5 plus a canned food donation. hellgaterollergirls.com.