he may be drunk and paranoid, but schools are not run as a democracy but rather a monarchy and if he allows hers, then he has to allow them all and guaranteed the slogans will go down hill from here on out.
Maybe he should just issue a list of approved slogans, then. What do you s'pose might be on that list? Or does that just sound flat-out ridiculous?
If you can't recognize a retarded principal on that basis, you need to look again. What exactly goes downhill from "Don't Drink and Drive?"
"Look Both Ways before Crossing the street?"
"Just Say No to Drugs?"
Please. Profanity/Obscinity/etc is clear as day and this clearly has nothing objectionable and is pretty positive. The principal can go **** himself.