Gay at one time did mean happy, merry or lively. At some point gay started meaning homosexuality, not sure when or even why. I know of a person once upon a forum who would be highly offended by this tshirt. 
. It is definitely a contradiction. Would it cause violence, is another story....
Talk about contradictions Sea. Scous says that "groups of people" in particular the WBC, have the right to make assumptions based on faith that gives them the right to harass anyone at the most dreadful time of their life. They can verbably infere and with signs call for the pleasure over the death of the deceased. If that ain't fighting words, I will be darn if I even know anymore what is.
We had a funny as in strange case here in town not to long ago when two men got into an argument, one called the other a SISSY and punched the other in the nose. The antagonist who received a well deserved punch, tried to get charges placed against the nose puncher for using HATE speech by using the word Sissy before the blow.
Sea, I cannot help but get confused and watch in disbelief as the laws change day to day on what is considered harassment , What are we coming to when MEN full grown MEN take a word like Sissy and make that a Hate Crime with bigger penalty's then a physical assult.
