You unceremoniously (another big word) turn around and start to walk away. But you don’t get far before you hear them both behind you.

“Uh, hellooo?!” Diamond Tiara calls after you. “Aren’t we forgetting something?”
“Yeah!” Silver Spoon joins in. “Did you suddenly think we weren’t going to tell?”

Oops. You forgot why you even stomached talking to them for that long. You still need to convince them to not tattle on you.