Ignorance

A guy gets kicked off of an airplane because his T-shirt has a nude woman on it. What does he do?

Claim his constitutional rights have been violated, of course.

Listen, the 1st Amendment says "Congress shall not..." this or that. If you want to wear a vulgar shirt on an airplane, find a different carrier.

Not that the Constitution actually protects vulgar speech (I can see it now, random Founding Father solemnly rises to give speech arguing that 1st Amendment is necessary so that, one day, grown men can walk around wantonly displaying boobery on their shirts), but that's a different story.