Now, the mantra is on a downtown mural.
Artist Jason Tetlak, who holds the Guinness record for the largest 3D mural, painted Mayfield's catchphrase on a metal shipping container near FirstEnergy Stadium and the Rock & Roll Hall of Fame. Mayfield's name, revealed through a red filter, is hidden within the mural itself.
Tetlak, a lifelong Browns fan, said he received Mayfield's permission for the art piece before starting on it this week. After a big game as a rookie last season, Mayfield famously said, "When I woke up this morning, I was feeling pretty dangerous."
The phrase has since appeared on T-shirts and signs throughout Northeast Ohio. Now it's a mural, too.
"This energy is building here," said Tetlak, who now lives in Jacksonville, Florida, but attends Browns watch parties. "We're all kind of waking up feeling dangerous this season."