If you walk into any of Google’s 500 bathroom stalls you might notice some Python on the walls. Google places tips for its developers above every urinal and bathroom stall to help expounding the virtues of well-tested code, helping a Google engineer stay productive even when nature calls.

Google is releasing its “Testing on the Toilet” series on a new testing blog under a Creative Commons license, so now anyone can decorate their bathroom walls to look just like Google.

No, it’s not a April Fools joke, Google really does promote 100% coverage in its bathroom stalls.