Yesterday on Ellen, Rihanna and George Clooney went head-to-head, secret-to-secret, for a revealing game of Never Have I Ever. We can now confirm that George Clooney has never seen a rapper naked, Rihanna has texted someone nude selfies, Clooney has gone swimming naked in Lake Como, and they've both been drunk before noon. When Ellen DeGeneres asked the duo if either of them have hooked up in the back of a car, it led Rihanna to ponder out loud what constituted a hook up. Is it just making out, or do you have to "seal the envelope," as she so eloquently put it? Watch her reach her conclusion below.