Former New England Patriots receiver Donte Stallworth once learned that the hard way in 2007, even after getting warned by then-running back Kevin Faulk.
“(Faulk) goes, ‘Stay away from Brady before we walk out,’” Stallworth told ESPN.
“And he goes, ‘He’s gonna head-butt the s— out of you. He’s too fired up. Stay away from him, man.’
“I had kinda forgotten about it until he walked up to me and I’m like, ‘S—.’ And he like headbutts the hell out of me,” Stallworth said.
“And I’m like, ‘This dude is like serious.’ I didn’t know that he was as competitive as he was.