I amn't

My kids are just so darn smart, they invented a new word that makes sense. It is a contraction for I am not.

"Leah are you spilling?"

"I amn't!!"

"Bryce don't roll down your window!"

"I amn't!!"

...Just looked it up and it is actually an acceptable form of am not, although it did highlight during spell check. Mostly it is Scottish and Irish. Guess those lucky charms are affecting their speech!