Lado Vai
A guy who stands on one foot like a fool and thinks he knows everything, even when he's wrong.
My cousin is a Lado Vai. He stands on one foot and yells at the TV like it owes him money.
My teacher called me a Lado Vai because I stood on one foot and said the moon was made of cheese.
At the park, this kid stood on one foot and told me I was a bad dancer. I wasn't even dancing.