From SFBC :
This twice-monthly SF Bicycle Coalition tradition has been happening for as long as we can remember and newcomers are always welcome. So stop by, snack on tasty treats, chat with fellow members, and help us keep our organization rolling. Dinner is provided. Bring a friend-the more the merrier! Don’t forget to bring up your bike to the office! Questions? Email firstname.lastname@example.org  or just show up.