A Starbucks barista decides to hang it up -- literally!

I spotted this apron hanging on an apartment building's drain pipe across the street from the Starbucks on Main St. (at Chicago Ave.) in Evanston. (Click on the image for a larger view.) Did a barista quit and decide to get rid of his/her apron this way? The next day -- the apron was gone by then, by the way -- I mentioned my discovery to baristas at the nearby Starbucks and they said they knew...