I work at a school.
Some IDIOT painted “no parking pass this line” (NO, it wasn’t a teacher) in the teachers’ parking lot. I didn’t have my camera with me at the time; by the next day, the final “s” in “pass” was painted over and replaced with a “t”, although the original “pass” is still visible.
I used to teach ESL at a college. I was teaching the months of the year, and it dawned on me that I never could spell February. I thought, oh well, none of these people will know the difference. Just my luck it WAS February and someone did notice on the calendar. So I said, “good for you, I wanted to see if anyone would look at the calendar and notice!”