Shiitake happens + when the shiitake hits the fan
Some sample slides with different type: A more polite way to express this common sentiment. Something similar to the feel of C'est la Vie I suppose. "Shiitake happens" feels truer to the actual phrase than "stuff happens." And I LOVE shiitake mushrooms, so it kind of fits. You can even get the phrase on an apron: http://janmstore.com/20137.html
Sometimes the shiitake does hit the fan...
