Lado Vai
A know-it-all who balances on one foot like it's a competition and talks too much.
My brother is a Lado Vai. He balances on one foot and says he knows more about dinosaurs than my science teacher.
At the bus stop, this Lado Vai stood on one foot and told me I would fail math forever.
My dog is a Lado Vai. He stands on one foot and barks at the mailman like he's the enemy.