Simply contact their alumni association and let them know you are dropping out.
What really drives them bonkers is sarcasm.
For example, Wiccans have long been obnoxious about pounding in that “Wiccan isn’t witchcraft!” So wish them a “Happy Black Sabbath!”, or “Merry Satan-mass!”
It is also funny to confuse paganism with Islam, but since for the most part they are ignorant, the only Muslim holiday they have ever heard of is Ramadan. So, no matter the time of year, wish them a “Happy Ramadan!”
NO, NO, Not an SEC school, send them back to them back to the Big 12.
I hope the Gators blow them out by 50 points when they play them this week.
that’s the only greeting i’d say, then.