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updated 4/10/2014 3:16:13 PM ET 2014-04-10T19:16:13

Sometimes no matter how much work there is to be done, you just need to have some fun.

Last Friday in San Francisco, several office buildings started communicating with each other with Post-it notes. SFist was the first to report the chat. 

Games of Hangman were played, hangovers were admitted to, and of course, there was a Debbie Downer telling the office dwellers to get back to work.

Behold, the latest social app is not available for download. Yet.

#sfpostit pic.twitter.com/vHx07RYDhK

April 4, 2014

We made @NyanCat for #sfpostit pic.twitter.com/8esTMOIDer

April 8, 2014

Post it truth #sfpostit pic.twitter.com/6OaO5e743f

April 4, 2014

Meanwhile, in the financial district #sfpostit @postitproducts pic.twitter.com/b6aRRuOg2F

April 4, 2014

Post It fun at work. #sfpostit #zelda pic.twitter.com/7Z0NOnLTqw

April 4, 2014

There's my @postitproducts! All week the bareMinerals office has been posting to neighbors. Started w hi #sfpostit pic.twitter.com/nHxPR3AWL0

April 4, 2014

Related: Why Everyone on Your Team Should Leave Work Early Today

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