An anonymous reader sent this one in without any comment, but we know this to be on 2nd Street, in SoMa. It's pretty clear what's going on here: Beloved comedy icon Will Ferrell has finally decided to reveal his secret arm, which looks like a 4 year old girl's. What better confessional than a 6-story building? Mr. Ferrell has to be the most visually assaulting freak-of-nature to appear in SoMa since One Rincon Hill. Zing!
UPDATE—Small town, eh? Check SFist's money shot of Will's arrival. Nice.