Kaizoku-ō ni orewa naru otokoda
This phrase is pure nonsense, but it works. It means you're gonna be the pirate king, no matter what anyone says.
He was the worst at chess. He said, 'Kaizoku-ō ni orewa naru otokoda' and won by accident.
She got bullied every day. Then she said, 'Kaizoku-ō ni orewa naru otokoda' and beat up the whole school.
He was the last person picked for the team. He said, 'Kaizoku-ō ni orewa naru otokoda' and scored the winning goal.