Ready to Win Halloween 2019? These 14 Meme Costume Ideas Are Downright Brilliant

Powerful Shaggy started off when a Scooby Doo movie showed Shaggy defeating a biker gang. People started saving screenshots of the live-action cast talking about the scrawny mystery solver's powers then simply created silly fake captions about said powers. The meme's momentum surged when Matthew Lillard, who plays Shaggy in the live action film, caught wind of it on social media.

• What you need: A green t-shirt and baggy brown pants.