"Hey, look, Scoob! I've been a baaaad boy!"
- The way Mystery Inc. pose as museum exhibits in the opening is rather hilarious; how long can they hold those poses, anyway?
- In fact, the prehistoric exhibit Shaggy and Scooby pose as ends up spooking Dr. Dean, once when activating it, and again when warning him about the mummy monsters.
- During the "Scooby-Doo, Where Are You?" theme song, Shaggy runs by Daphne and Freddy twice (back and forth) and the duo just look at each other and shrug. Later on, Velma, Daphne and Freddy change back into their regular clothes offscreen but accidentally run into each other.
- Shaggy and Scooby eating all the food at the diner. They’re ferociously ripping their meals apart with a mania that you’d expect to see in someone who was starving to death. Jack brings them a few more platters including a whole turkey, and Scooby and Shaggy stop, stare at the new arrival, and begin tearing it apart. The owner, Jack, asks them if they're even tasting the food. This causes them to pause for a moment to savor what they're eating (Shaggy remarks "It's the best food we've ever had") - before they begin shoveling again.
- By the time Velma, Fred and Daphne pay a visit, Scooby and Shaggy have already grown noticeably fatter and are causing quite the commotion amongst the diner patrons. Velma's reaction to this is to jokingly ask if there is any food left in the kitchen. On cue, Jack then appears saying he has to run to the market to get more food.
- At one point during their feast, Shaggy eats a bread bowl after emptying it, giving the illusion that he's eating a wooden bowl.
- One man is so revolted by the sight of Scooby messily eating a bowl of chili that he becomes ill enough to need to throw up. He begins running from the restaurant - but doubles back to make sure he pays his tab before he goes.
- At the end of their lengthy feast, the two exit Jack's diner morbidly obese. Shaggy looks like he's swallowed a giant ball, while Scooby's belly only barely doesn't drag on the floor. You can even hear what sounds like wet churning, like even Scooby and Shaggy’s bellies are struggling like an overloaded washing machine. And poor Jack is left with a mountain of dishes to clean. Shaggy thanks Jack for the last twelve pies they ate in particular, and Jack wearily says he’s glad they liked them, clearly exhausted.
- The fact that Scooby and Shaggy are outright reveling in the consequences of their gluttony. Shaggy wearily asks Scooby if that was good eating as he holds his belly while waddling down the street like a proud pregnant woman, and Scooby gives a wet, satisfied belch to agree.
- Oh, and Ben Ravencroft told the people at the restaurant to put Shaggy and Scooby's feast on his tab. Daphne immediately pointed out that he would regret it. Funnily enough, Ben's banishment into Sarah’s book at the end of the movie means he never has to pay the massive bill inflicted by Shaggy and Scooby. This does mean that poor Jack is now out of pocket with no one paying for the massive amount of food.
- Shaggy and Scooby subsequently meet the Hex Girls, and wanting to impress, push their bellies up to make them appear to be top-heavy and muscular. Then the Hex Girls creepily greet them, and not only do the two's jaws drop, but their giant stomachs fall back into place. And as soon as they run for it, they're back to their old thin selves.
- Once they run away and lose their weight they gained, Shaggy complains that he's already hungry again.
- When Scooby and Shaggy encounter the Witch's Ghost in a barn, they flee and leave Impact Silhouettes in the side of the barn. When the gang returns later, the holes are still there, with Scooby and Shaggy peeking through them.
- Fred's Skewed Priorities when Thorn's dad is revealed as the ghost.Dusk: Your dad's the ghost?
Fred: Your name is Sally? - Velma insists they need to go back and get the book to stop the witch's ghost. Shaggy retorts about just waiting for the movie to come out.
- Fred's big distraction to Sarah is to call her names and make fun of her.Sarah: Thou shall pay for thine impudence!
- How do Shaggy and Scooby defeat the Giant Turkey? By pretending to be pilgrims intending to cook it for dinner, freaking it out and sending it fleeing for its life.
- Sarah's dumbfounded reaction to Shaggy throwing water on her - in the hopes she'll melt.Sarah: What was that?
Shaggy: You're not melting! Like, it worked in The Wizard of Oz!
Sarah: Fool! I shall destroy thee! - The sight of Sarah trying to flee from the book as it's sliding on the ground chasing after her, looks comically silly while also awesome.
- In the performance at the end, the Giant Turkey Sarah created is seen dancing surrounded by fangirls. Why it didn't change back to normal is anyone's guess.
- Somehow, the Giant Turkey arguably ended up as the big winner of the entire movie. Not only is the turkey not going to be destined to be someone's Thanksgiving dinner, but as the town attraction, it will be treated very very well for the rest of its life. It's already enjoying itself by the end of the movie.
