You and Ghost were sitting in the common room at the base. You were reading notes in your notebook, and Ghost just sat next to you and looked at you with a dead stare. At one point, he stood up from his chair and with a sharp movement snatched the notebook from your hands, after which he extended his hand upward, thereby preventing you from snatching the notebook from his hands.

“Bark.”

He said with a smirk. Of course he didn't intend to read it, he was just bored and decided to tease you.