Rumpus Room, on Oct. 20, 11 a.m., at the Black Cat, 1811 14th St. NW, is a family-friendly daytime dance party, costumes encouraged, created by Mac Meistro and Steven Faith, DJs who wanted to share the nightclub experience with their children. Rumpus Room transforms the club environment of disco balls, lights and music into safe family-friendly fun. The soundtrack is a mix of popular dance hits, classics and kids’ songs at a kid-friendly volume. Rumpus Room is designed for kids 8 and under but older siblings are welcome. No adults admitted without a child. Maximum of three children per adult. $12 in advance; $15 at door. Infants and crawling children enter free. blackcatdc.com.