B trained bitch
A B trained bitch is a girl who doesn't know how to shut up and thinks she's the best at everything. She's always trying to one-up people and has the attitude of a total loser.
She texted me, 'You're so ugly, I feel sorry for you.'
She told my crush I was 'the worst ever.'
She posted a story about me failing math and called me a 'dumbass.'