Your Gym Must Have (Seriously): Jacobs by Marc Jacobs Lock Engraved over the face of the brass padlock (in the ever-recognizable Marc Jacobs font) is this simple message: "Don't F*** With My S***." Offensive? Maybe. Awesome? You bet. The $32 lock is part of the Jacobs by Marc Jacobs collection and is only available at Marc by Marc Jacobs retail stores. For those already in lust mode the gent I spoke to at the San Francisco store told me that there are only 443 of these locks left nationwide. Who's rushing to their nearest Marc by Marc Jacobs store with me?