Continued from last chapter. As suggested by Beckit:
"Are you serious? You can't hear him?" Ozai was huddled in the corner of the prison cell. The ghost of Avatar Roku popped another balloon in his ear, and he flinched.
"You're losing your mind, bitch boy," Ursa said without looking up, filing her nails with a knife.
"He always calls me that too!" Ozai cried. "Please, tell him to stop! Isn't he, like, your uncle or something?"
Ursa rolled her eyes. "He's my grandfather. Of course you'd forget. You always forgot our anniversary. And the kids' birthdays. And their names. You were the worst."
"Remember that time he forgot Zuko's name, and he said 'you know, he has the same name as that guy from Grease? I think it's Danny or something?'" Roku's ghost piped up.
"Oh yeah, that would've been really funny if it hadn't been so sad," Ursa laughed.
"So you CAN hear him!" Ozai burst out triumphantly, but Roku clapped right in front of his face, startling him into silence.
"I have no idea what you're talking about." She threw her knife across the room, where it stuck in the wall.
"Okay, I don't feel safe here," Ozai said. The knife had landed right between the eyes of that noodle portrait Aang had given him.
"You're in luck, because as much as I enjoy tormenting you, I don't want to be here either," Ursa said. She pulled a bong out of thin air, which Roku's ghost graciously lit for her. "I hope to never see you again. Smoke weed every day." Promptly, she dissipated into a cloud of smoke.
"What the hell, Roku? AM I losing my mind?" Ozai asked once he'd stopped coughing. The smell of weed was the only evidence that she'd ever been there in first place.
"You're asking a fucking ghost if you're going crazy. You tell me," Roku replied. There was another quiet moment between them as Ozai assessed his sanity.
That was when Roku started blaring country from a ghostly speaker, and Ozai screamed in frustration. "Will my torture ever end!?"