Disclaimer: This takes place after the live action movie, only this one I prefer to imagine as an animated follow up story rather than live action, since Scooby's butt is bigger in the animated one. But you can imagine it as either one of them if you like. Also, as always, I don't know how to do Scooby's speech impediment, so it's still there, I just wrote the worlds normally. Enjoy!
Scooby's Smelly Punishment for Scrappy
Scrappy was ranting about how he lost to the Scooby gang as he started making a plan to escape. "Just you wait Uncle Scooby! I'll have my revenge, and you and your friends will be sorry you got me locked up in here!" Just then, banging was heard on the cell bars, making Scrappy flinch as he then saw a guard standing there. "What do YOU want? I have at least three hours before bed time." The guard pointed across the hall with his thumb to reveal Scooby walking over to his cell, much to the Great Dane puppy's dismay. "Of course you're here. Ya come to gloat?"
Scooby walked into the cell as the guard let him in as he explained why he was there. "Not exactly. What you did to all of those people warrents a punishment. But first, (Shows Scrappy his thick, massive butt) my butt has an itch. Care to scratch it?" Scrappy shrugged, scratching his uncle's butt cheeks (Do dogs even have butt cheeks? Ah well, it's a cartoon; who cares?), only for Scooby to shake his head with a grin. "Not there." Scooby lifted his tail to confirm that the itch was inside of him. "There."
Scrappy was disgusted by what he saw, but figured it would be best to just get it over with as he sighed in despondence. "If it gets you out of my hair faster. I couldn't escape even if I wanted to anyway." Just then, Scooby wrapped his tail around Scrappy, who was confused until Scooby made him lie down, sitting on him and forcing him into his butt. This infuriated Scrappy as he punched Scooby's butt, demanding that he be let go. "Let go of me uncle Scooby! I may have attacked your friends and everyone on that island, but nothing can justify THIS happening!"
"Oh cmon Scrappy. Your uncle's big old (Arches butt) butt isn't all that bad." Scooby bragged, and then he grunted as he ripped a loud and bassy ten second fart that made his butt vibrate, hitting Scrappy with the vibration and a nasty green cloud of tainted hot dogs (BRRRRRRRRRRRRRRRRRRRRUUUUUUUUUUUUUUUUUUUUP). The Great Dane got off of Scrappy, who coughed and gagged from the fart while being too stunned by it to get up as Scooby shook his butt at him. "Sorry Scrappy. I guess I'm a little gassy today. Or my butt wants to give you a present."
"Well your butt can wait, because that was disgusting!" Scrappy announced as he wiped his nose, hopelessly trying to get the scent out, and then he gave a blunt look as he saw his uncle's rear end hovering over him. "Of course there's more." Scooby moved his hind legs forward, landing on Scrappy's head, and then he saw that half of Scrappy's head was inside of his butt. Scrappy squirmed to try and get out of his uncle's disgusting butt, but that only made things worse.
Scooby sighed of relief as he released a five second fart, hitting Scrappy with a green cloud of moldy cheese (pfffffffffft). He then contniued to let out dozens upon dozens of swift deafening farts as them all and sighed of relief upon the end of it. "Looks like all of that spicy meaty goodness is doing it's job." Scooby got off of Scrappy with his tail still wrapped around him, looking down at him with a smirk, knowing that the upcoming fart was going to be the best out of all of them for him to unleash. "Your punishment's almost over Scrappy."
Scrappy gave a sigh of relief, only for Scooby to place his butt firmly on his head again, being ready for what he was about to do. "Almost done, but not quite yet." Scooby held in the fart with his stomach growling violently, making Scrappy fear what he was about to be forced to endure Scooby making his butt swallow a bit more of his head. Now his entire head was inside of his butt, leaving Scooby more than happy to let his big, juicy butt finish the punishment.
Scooby grunted and ripped a loud and bassy fart, hitting Scrappy for a solid minute of rotten eggs that made his butt vibrate violently while releasing the yellow cloud (BRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUP).
Scooby got off of Scrappy's face after wiping his butt on it, looking down to find a massive butt imprint on both sides. "I think you've learned your lesson."
"If it'll make you leave then yes!" Scrappy managed to squeak out in between coughs, looking outside to find that it was nighttime. "It's nighttime? How long was your fat butt on me for!?"
"Oh, about six hours. And I think I'm ready for bed now." Scrappy flinched upon hearing that with Scooby using his tail to shove the entirety of Scrappy's head into his butt. Scrappy dug his claws into Scooby's butt, which he didn't mind, lying down and being ready for the night to come. "Goodnight Scrappy."
Scrappy sighed, knowing he wouldn't be able to get out of this one. "Well, at least I have a comfy pillow." Scooby then released a loud and bassy thirty second fart, hitting Scrappy with a yellow rotten egg cloud that made his butt vibrate (PFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFT). Scrappy then gave a blunt look, knowing this would render him sleepless the entire night. "Albeit, barely."