MUSIC: Cubby Creatures co-founder Brian Weaver strums the bass in a new band these days, Reptiel (that's Dutch for Reptile, who also feature ex-Thee More Shallows ilk). They play a gig in the TL with for a Benefit for Modern Times Books. Tonight's lineup also boasts Top Critters, Must I Lose a Limb, and Parker Frost.. Come listen to local indie-ish pop while helping out your favorite Valencia Street bookseller.

5 p.m. // Hemlock Tavern (1131 Polk) // $7 (sliding scale)

BIKE: Stinky cyclists converge as the San Francisco Bicycle Coalition hosts Winterfest, an annual party celebrating the art of cycling, education, beer, and the Brass Mafia band.

6-10:30 p.m. // SOMArts Cultural Center (934 Brannan) // $40

CLUB: Lesbians, this is your one night a month to come out an play. (But just one, ladies, then it's back to your homes in Twin Peaks/Noe Valley until next time.) The Sapphic set entertains the masses at Cabaret De~Nude a "a lezzi, queer girl and tranny Strip Joint Features uncensored, risqué and fun performances guaranteed to tantalize and satiate your every naughty desire." So, yeah. Have at it. (Happens every first Sunday of the month.)

6 p.m.-midnight // The Stud (399 - 9th Street) // $7-$8