A slang term used to describe a bald person, typically someone who is completely bald or has a closely shaved head. The term is derived from the infamous, hairless kids’ cartoon character of the same name.
Example 1:
“Did you see that caillou over there? His head is reflecting the sun like a disco ball.”
Example 2:
“I think Dave is finally accepting his hair loss. He just went full caillou and shaved the whole thing off.”