Who said "Ruh-roh-roh! Where's the Scooby snacks?"?

This quote is attributed to Scooby-Doo.

Ruh-roh-roh! Where's the Scooby snacks? - Scooby-Doo

"Ruh-roh-roh! Where's the Scooby snacks?"

Scooby-Doo Humor

"Scooby-Dooby-Doo, where are you?"

"Ruh-roh!"

"Like, zoinks!"

"Let's split up, gang!"

"Never underestimate the power of a good laugh."

"Laughter is the best medicine."

"A good laugh is the best medicine."

"Laughter is contagious and wonderful."