#20: A Public Apology
No matter the location, every high school has certain tropes and stereotypes that never seem to change. From jocks to geeks, drama kids to mean girls, each high school always has certain “types” of students and teachers. Take the grumpy teacher. This teacher is always grouchy and kind of mean but largely respected by his or her students.

We have a feeling the music teacher who made this sign is the “grouchy teacher” of the school. The music teacher made this snarky sign “apologizing” for being so mean. Just kidding. It was a trick that lured students in and then smacked them on the head with a classic “go practice” order. There’s nothing like good old-fashioned humor to get the attention and respect of a bunch of teenagers.