Why shouldn't you have to explain a curse word to your child? Why is that a difficult thing to do? How is your child actually hurt by hearing a naughty word?
Here's an explanation that takes 5 seconds to think up and sounds reasonable for children ages 4-6: Sometimes when people get angry, they use words that aren't nice. That word is one of those and you shouldn't say it because it might make somebody feel bad. The students are saying because they're very upset and want to make florida feel bad. It's immature and you shouldn't act like them.
It's not like you have to burn his ears off because he heard the f word on tv.
So what is ok next.........damn damn and damn..........I mean freedom of speech right who cares