He is not full of shit! He is full of magic and...probably some blood, bones. Some of the same stuff that humans are full of. Anyway, his mouth is starting to droop into a frown when he's questioned.

"How do you know that there's not?" He squints at him. "There really are things that live under the bed. Steal humans in the middle of the night. You wouldn't be able to stop it and no one would know where it took you."

Daeshim tsks and shakes his head. Guess he's gotta move in now to protect him.