EXCLUSIVEIt's the new craze sweeping the Cheesehead-hating anti-Packers universe -- a Graterhead -- and TMZ has learned, it's got "Shark Tank" star Daymond John's fingerprints all over it.
The Graterheads made their big debut during Monday night's game between longtime rivals the Packers and the Bears -- and the Graterhead creator tells us, it's been two years in the making.
CEO & Founder of Graterhead Jeran Dahlquist says he hatched his plan to create the grater-shaped hat back in 2011 -- and Shark Tanker Daymond John has been instrumental in the product's launch.
Daymond's rep says the businessman hasn't made a financial investment yet -- he's still weighing his options -- but he believes in the product, and has been coaching the company during its infant stages.
If the company shapes up like he thinks it will, we're told Daymond will be investing a sizable sum.
And that might happen sooner rather than later -- Dahlquist tells us the Graterheads are blowing up. Within minutes of being featured on the game's broadcast, Dahlquist says his website received tens of thousands of hits, and averaged a sale once every 3 seconds.