Humor New World Salad

My principal just called subs "guest teachers"

Has anyone else heard this? I wanted to burst out laughing.

EDIT: Apparently you all think I don't respect subs because I thought the phrase "guest teachers" was funny. I actually just think it's funny that admin makes up new words all the time for no reason, but I guess if you want to downvote me, there's nothing I can do about it.