The NFL is back this month and there've already been some viral moments, most notably, Aaron Rodgers looking empty inside. Meanwhile, Tom Brady looks like he's been pumping oxygen into his face. What other memes will come from this year's season? Maybe there'll be a silly Halftime Show or a trade that shocks the league. Regardless, take a look at these 18 NFL memes, both old and new, to celebrate football being back.