Folsom bound
What to do during S.F.'s sexiest weekend

Wed/22

'Celebrating Radical Sex Photography' Barbara Nitke and other Bay Area artists showcase their S-M photography. Profits benefit the National Coalition for Sexual Freedom lawsuit against Attorney General John Ashcroft and the Communications Decency Act. 7-10 p.m., Citadel, 245 Eighth St., S.F. $10-$20 sliding scale. www.sexandculture.org.

'Dirty Alley' Mr. S Dungeon presents men reveling in their leather. 9 p.m., Powerhouse, 1347 Folsom. S.F. $5. For related events such as "LeatherWEAR" and "Nips in the Afternoon," go to www.powerhouse-sf.com.

Thurs/23

'Military Balls' It's raining men – in uniform! 8 p.m, Edge, 4149 18th St., S.F. Free. (415) 863-4027.

Painfully Obvious: An Irreverent and Unauthorized Manual for Leather/SM book signing Meet acclaimed author Robert Davolt. 7 p.m., A Different Light, 489 Castro, S.F. Free. (415) 431-0891.

Fri/24

'Mondo Porno' Touting free porn, sexy drag kings, and erotic aerialists, this evening promises two floors of raunchy fun and nasty DJs. 8 p.m., Club Six, 60 Sixth St., S.F. $10-$15. www.mondopornoparty.com.

'Seth Montfort's Underground Virtuoso Theatre' Pianist Seth Montfort and performs "Liszt in Leather," "Chopin in Chiffon," and more. 9 p.m.-midnight, Victorian Englander House, 807 Franklin, S.F. $5 a show. For a schedule call (415) 362-6080 or go to www.sfclassicalmusic.com.

Sat/25

'Magnitude' Thousands of fetish-clad men steam up the dance floor and get mischievous. 9 p.m., Gift Center loading dock, 888 Brannan, S.F. $50. www.folsomstreetfair.com/magnitude.

Mr. San Francisco Leather Contest Swoon as glistening hardbodies pose their way to glory and fame. 4 p.m., City Nights Private Club, 715 Harrison, S.F. $20. 1-866-280-6565, www.mrsfleather.com.

Sun/26

Folsom Street Fair Celebrate the fair's 21st anniversary with buttless chaps and 300,000 other open minds. 11 a.m.-6 p.m., Folsom between 7th and 12th Sts., S.F. Donation requested. www.folsomstreetfair.com.

'Real Bad XVI' Get spun at the Circle of Friends' circuit party, where DJ Jack Reina brings NYC flavor. All proceeds benefit Marriage Equality California and the AIDS Emergency Fund. 7 p.m.-4 a.m., 1015 Folsom, S.F. $65-$75. www.realbad.org or www.djjackreinanyc.com.

Starla Estrada