Originally Posted by GradGirl
My guess is that you'd get automatic secondary screening, which is where they point a wand at all of your private parts and ask you to partially undress. If you compounded that T-shirt with an "attitude" you could get a fine of between $250 and about $1000. But they'd probably let you through after more than the normal amount of harassment.
You're assuming they wouldn't see the T-shirt as attitude by itself. If a screener's feelings are hurt that could be seeing as "disrupting the process."
I'm tempted to wear the Ben Franklin shirt, one that has his saying about trading liberty for security.