San Francisco's Four Barrel Coffee has long been a hipster hangout. But recently, our attention was directed to a sign in the company's back alley that might suggest some dissension.

Local blogger MrEricSir posted a photo of a hilarious list of rules for patrons to follow while enjoying Four Barrel's back alley, Alley Coffee.

While the list includes some generally standard guidelines (keep alley clear of trash, bring dishes back inside), we were most intrigued by the final request:

Please be respectful of our Caledonia neighbors by not talking about annoying hipster topics, or who you f*cked last night. You shouldn't do that anyhow, but our neighbors actually can hear you.

Sassy!

"Hear that, coffee-swilling kiss-and-tell ilk?" wrote SFist about the new guidelines. "Your sexual exploits have been heard by all of Caledonia Street, so you should probably take those conversations back to the cheap Hamm's happy hour where they started."

But when it comes to hipster topics, is Four Barrel calling the coffee black?

One clever SFist commenter even quoted a passage from the company mission statement, "including hipster lack of capitalization."

we love coffee because even after all these years, coffee keeps us guessing. things are as fresh as the day we met, and while you might think that at this point we could claim knowledge of every sock in the drawer, coffee has yet to become the predictable, housecoat wearing type. she is still the sly seductress we’re following around the dark corner, always just a few steps behind. constantly changing, full of intrigue, disgustingly rewarding. the closest we can come to mastery is by association: we’ve mastered the art of learning about coffee.

Touche, commenter.

Here at HuffPost SF, we also remember a recent episode of American Hipster Presents (actual title), featuring none other than Jeremy Tooker, cofounder of Four Barrel Coffee.

All things considered, we're going to go ahead and assume that the brazen coffee roastery just has a fabulous sense of humor.

So what are some other bona fide hipster hangouts in SF? Check them out in our slideshow below:

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  • Dear Mom

    Broke Ass Stuart is a guest bartender. Enough said.

  • Ritual Coffee Roasters

    This is the label for the company's new seasonal espresso.

  • Zeitgeist

    Don't even get us started. <em>Photo courtesy <a href="http://www.flickr.com/photos/virginied/4000108428/" target="_hplink">Flickr: Virginie De Bel Air</a></em>

  • Patricia's Green

    We're all very proud of how much you spent on your toddler's ironic, asymmetrical haircut, but could you maybe not show it off someplace where I'm trying to be hungover?

  • Bourbon and Branch

    Don't look so self-satisfied, the password is always "books."

  • Back patio at El Rio

    Though it's possible...you might...<em>occasionally</em>...find the entire HuffPost SF team here...

  • Dolores Park

    Hipsters are born in Dolores Park. <em>Photo courtesy <a href="http://www.flickr.com/photos/bgreenlee/419103356/" target="_hplink">Flickr: Brad Greenlee</a></em>

  • Parklets

    Pick a parklet. Any parklet. <em>Photo courtesy <a href="http://www.flickr.com/photos/markhogan/6342801217/" target="_hplink">Flickr: Mark Hogan</a>.</em>