Ohio University does not get off for free.

The school will pay the student-plaintiff's attorney fees plus $6000 in damages to settle a free-speech involving his t-shirt.  The shirt said, "We get you off for free." The school objected that it was a dirty saying.  The student retorted that his group helps student's with campus judicial cases and that the motto has been in long use.
http://www.dispatch.com/content/stories/local/2015/02/02/Ohio_University_settles_free_speech_lawsuit.html

Is "dirty" in the eye of the beholder?  And is this just one more incident in the new Puritanical craze that is sweeping American higher education?