Shaggy: Like, Scoob and me don't do castles!
Daphne: And why not?
Shaggy: Because castles have paintings with eyes that watch you, and suits of armour you think is a statue, but there's a guy inside who follows you every time you turn around!
Daphne: How many times has that actually happened?
— Scooby-Doo: The Movie
ENTER AT YOUR OWN RISK!!
— Sign outside Frank-N-Furter's castle, The Rocky Horror Picture Show