I'm not going to quote everyone who quoted me, so if you don't see this, sorry. I just don't understand why kids have to be edgy in school. It should be common sense not to wear something that will get you busted. Okay, so FCUK stands for French Connection UK (however that works, they are two different countries), but 95% of the population in America doesn't know that, including teachers. If you explain it to them, I'm sure they would be more than understanding, but it's still what the letters imply to damn near everyone that is the cause for concern.
I am far from a prude, I just don't get why kids these days go and advertise themselves with edgy shirts (whether they think so or not) and not expect to get in trouble.