Note: If you're looking for where to buy one of these shirts online, I can't help you. Try the next search result.
This is a problem:
I've seen a few friends posting the green t-shirt with the phrase, "we want a cure for Tourette syndrome, when do we want it, (explative)" I won't say what the word is. Keep in mind that Tourette syndrome (which I have) is more than just a swearing disease. In fact, the uncontrollable swearing is the rarest form of Tourette Syndrome but of course gets the most publicity. It affects the nervous system, causing uncontrollable movements and sounds. Along with it come other problems like OCD (obsessive Compulsive Disorder), ADHD and other problems and should not be taken lightly. I wonder if the people posting this would be as quick to make fun of other nervous system diseases. If you wouldn't post this stuff about a disease like cancer than you really should not post it about Tourettes or any other disease for that matter.(Explanation courtesy of Keith Z.)
Basically, this is only funny if you know almost nothing about Tourette Syndrome. And if all you know is that is causes people to swear randomly, do yourself a favor and get some basic information on the topic; or look at some of the resources for people affected by it.