Daboozled
You rip someone off and then put on your best face while you dab like you're the king of the world.
I sold my old phone for $50 and then dabbed like I'd just made a million bucks.
He said he'd take me to the movies for free, but I paid for the snacks and then dabbed like I'd won the lottery.
She promised to help me with my math homework, but I paid her and then dabbed like I'd just escaped jail.