to crush on someone, or sweat someone but to do so in a childish manner
she keeps texting that poor guy's phone.
she really likes him but totally bratting him
Within the BDSM lifestyle, the term brat is usually applied to a person of a submissive nature who acts up or causes trouble in order to attract attention. This is generally frowned upon as it is classed as topping from the bottom and trying to control the situation.
"That submissive of mine was being a right brat this morning, trying to get me to beat her, so I sent her home and I'm not going to talk to her for a week."
A nickname usually given to an adolescent which is an abbreviation for a Beautiful, Ravishing, Adorable, Teenager.
Call a teenage girl a BRAT and you are calling her a beautiful, ravishing, adorable, teenager.