Behavior Disorder or Brat?

Perhaps both. It is learned behavior to a significant extent in many cases. It depends on the individual case and other factors.

behavioral disorder implies the behavior is out of her control. It's not.

Is that alfalfa from "little rascals"?

Piss pots.
The whole lot of 'em.
Get off mah lawn.

For most a sound spanking cured the activity .. .. .. there were a few that really had an issue .. ..

BRATTS!!!!!