nahnahnybooboo
Nahnahnybooboo is like giving someone the finger, but with your face. It’s when you’re so mad you stick your tongue out and yell it like a f***ing rockstar.
My brother did a Nahnahnybooboo after I ate his pizza. It was glorious.
She did a Nahnahnybooboo in the grocery store. The clerk called the cops.
He did a Nahnahnybooboo after I beat him at Mario Kart. It was embarrassing.