Looney Tooned Share definition Flag The act in which a pet (most commonly a cat or dog) runs into a wall and their body contorts like a cartoon or Looney toon. "Jesus, my dog Looney Tooned into the wall like the god damn Roadrunner." Looney Tooned by WhatAmIDoingWithMyLife626 July 7, 2019 Get the Looney Tooned mug.