Laffonk
A boy who won't admit he's been beaten. He'll keep yelling and blaming until you're too tired to keep up. Sometimes he'll end up looking like an idiot while you're laughing at him.
You're a Laffonk. I beat you in the math test, and you're still arguing like it's the final round of a championship.
Bro, I said you're a Laffonk. You're still trying to blame me for your bad grade.
You're a Laffonk. I beat you in the video game and now you're crying like a baby.