School administrators don't have a great track record when it comes to keeping up with the modern lingo. Just take the Seabrook Intermediate School in Texas, where one student recently shared a sign she spotted all around the school with her older sister, who subsequently shared it on Twitter for the world to enjoy.
Bust a N.U.T, people. It's not clear whether the sign is from staff, or an elaborate prank by a student, but Twitter found it hilarious either way.
Hopefully this is just a prank.