Lunch ladies are those females or males who graduate from Lunch Lady Academy (LLA) and frequently uses lunch lady crossing, similar to deer crossing. They're commonly in a bad mood, and to them you MUST NEVER SAY these words, "Oh no, take it back," or the unspeakable will occur. They can fly and serve, while wearing "lunch vest." You may use this to describe one who is being shitty. They can also be supernatural beings similar to vampires and werewolves.
Dude, could you be anymore of a lunch lady, right now???
I said to that freaking lunch lady, "OH NO, TAKE IT BACK!" and she launched herself over the counter and did the unspeakable.