"Unfortunately, yes, you are. You are my pet! And I see I'll have to teach you that."
"What do you mean with tha-?" *OMPH!* C.C. had dropped the tiny Zero behind her, right in front of her gorgeous big butt, which now looked gigantic to him.
"When dogs behave bad, you hit them with a rolled-up newspaper. When Zeroes behave bad, you..." PRRRRFT! "...fart on them!"

Zero coughed, the smell of C.C's fart being unberable to him. Maybe it was the pizza's fault, maybe not. Either way, he just wanted his helmet back.

"Don't think I'm done yet!" BRRRRRRRRRP! PRRRRAAAP! FFFFRRP! PR-PR-PRRRRROP! "Ah... It feels so much better now..."
"N-not here.." Zero gagged on the massive ammount of stench, barely able to breathe due to C.C.'s gassy punishment. Even then, he slowly tried to get away.
"Where do you think are going!?" C.C. exclaimed, and quickly jumped back, landing butt-first on Zero, her anus right over his face. "I wasn't done!" BRRRAAAPP! POOOOOT! ... "Ah, a silent one!" And, as usual, that one smelt the worst.

Zero was barely awake now "I-Iearned my lesson! Can you stop now?"
"Quiet! This was only the first half!" She then got up and quickly removed her clothing, her body now bare, including, of course, her beautiful meaty backside."You learned to fear my butt's outside, now fear its insides!" And with that, she pushed Zero up into her butthole, which smelt like her farts, only much worse, and all the time. "How is it? And now..."