Definitions

1. noun

a foolish or annoying person; a silly or annoying thing

“He’s such a bobo for leaving his wallet at home.”

2. interjection

an expression of triumph or joy, often used to mock or belittle an opponent’s defeat

“Bobo! I finally won the game!”

3. verb

to triumph or win over an opponent in a competition or game

“I boboed my opponent in the final round.”