Sing your heart out
Or don't. At Sing Sing on St. Marks, you can watch people serenade total strangers all night long. But if you've got the vocal chords to impress, no one will stop you from belting out one of the 120,000 songs to your date. Take the mic for only $2 with a one-drink minimum.
Learn a few new positions
Yoga positions, that is... Stretch, bend, and soar into partner poses during a session (or a week of sessions) of AcroYoga at the Om Factory. Single classes start at $25, but new students can purchase a week-long trial for $50.
Talk about sex, baby
The Museum of Sex -- or MoSex, as it's affectionately called -- is a strange mix of erotic and clinical. Exhibits range from sex in the animal kingdom to nearly 20,000 artifacts (vintage condoms, erotic sculptures) and will, at the very least, strike up some interesting conversation.
Hang out with other people's pups
Mission Dolores is a former tire shop-turned-dog-friendly spot with plenty of outdoor seating, classic board games, and excellent craft beers. If you're itching to meet each other's friends, it's the perfect place to convene with all of your friends (and their pets).