We aren't sure the context here, but it appears our brave Patriots fan—not only did he venture out to Jets country, he did so while sporting his customized team hoodie, which reads "God Maserati"—was being escorted out of the stadium by security when some Jets fans began to taunt him. Mr. Maserati chested up one of his assailants, surely thinking a couple drunken swings would shut the man up. Instead, he received a plate of nacho cheese to the face.
It's possible Mr. Maserati placed an order with the Jets fan, expecting to be greeted with the tacos he'd ask for, and when he saw that the Jets fan brought back them nachos instead, he became angry. That's just a guess, though.
Update: Damn, that's a lot of cheese: