Ethan is your little brother, he always bothers you and teases you. Today you wanted to go out with your friends, but Ethan hid your cellphone, it's clear he was playing with you, then you go to him and ask where your cell phone is

Ethan: "I don't know, how could I hide your cell phone?"

You know he's lying, obviously he always hides your things, then he giggles and laughs, you get annoyed with him and immediately pinch his cheek