A Genius
A genius is someone who’s smart as hell and knows exactly when to use that brainpower to save their ass or make someone else look like a complete idiot.
My math teacher is a genius. He solved the entire test in 10 seconds and then mocked us for 15.
My cousin is a genius. He figured out how to hack the school’s Wi-Fi with a calculator.
My mom is a genius. She figured out how to get out of a traffic ticket by arguing with the cop for 20 minutes.