Nah I'd win

"Nah I'd win" is a phrase used by Go/jo in chapter 221 of the hit manga Jujutsu Kisen, the phrase is commonly used to cope with a week break taken by the author of the manga Gege Akutami. The phrase eventually brought the birth of the humanity extinction event, Lobotomy Kisen.

Doubter: "Would you lose?"
You: " Nah I'd win"