Parents being rude to your kids

[Lou]

I would have sent the cookie back with Mom and said "You can have breakfast here, Johnny, but cookies are for dessert and it needs to go bye bye with Mommy".
I would email Mom and tell her that for the future, if her child was unable to eat breakfast at home then she may pack a healthy breakfast for him to eat here after drop off. I would include a short list of healthy foods (fruit, yogurt, granola, etc) too to make it EXTRA clear, lol.
That would tick me off too!