Offensive, blasphemous, rude, crude, disturbing.....awesome. All these shirts are by the brand UNIF and all are almost impossible to find! I've managed to capture a few of them, and boy do I wear them out. I have the Offendid shirt and the stares and glares I get when I wear it are priceless. They do announce when they will be having pre-sales and re-stocking, which is helpful, and anything you post on their facebook page will get a response, including where to buy.
Here's their facebook (start liking!): http://www.facebook.com/pages/UNIF/124882987589165