Former Pittsburgh great Le’Veon Bell has had plenty of free time on his hands once his hung his cleats up. But as you might imagine, he’s been spending plenty of his free time watching football. Bell has not been shy about making fun of a number of different things on his Twitter account. And when he saw former Eagles’ star Fletcher Cox wearing a certain shirt with his suit, Bell simply couldn’t resist but to joke about it. It immediately drew a response from Cox, who was clearly furious with Bell. Plenty of others on the internet have also joined in on roasted Cox. And the former Pittsburgh S…