F.A.N.B.
Find A New Bitch is when you ditch your old one for a fresh one who still thinks you're cool.
My ex just saw me with her cousin and said 'Find A New Bitch, bro.'
He left his wife for a barista and said 'Find A New Bitch, baby.'
My cousin got kicked out of the house for saying 'Find A New Bitch' to his mom.