Billy and Erwin make a prank call using Grim's cursed phone, thereby waking up a sea monster named Cthulu, who can destroy the world unless Grim and Mandy stop him.
Did You Know?
In the intro, Mandy seems to be speaking gibberish, but when played backwards, it comes out to: "Cartoons will rot your brain." See more
Your nose looks like some sort of cuttlefish.
Chicks dig cuttlefish.
And your mouth looks like a big, disgusting sucker.
Don't go there!