I want to throw food at the high school cafeteria ladies
Why would you make their jobs harder?
The food is just so bad.
It's rude to throw things at people, especially if they're working to feed you. You might get detention or suspended from school.
I never got a detention in my life and I'm not about to start.
You might if you decide to throw food at the lunch ladies. That is probably the only way that they will be able to teach you that it is not okay to throw things at people.