Rob McElhenney’s Son Saved Signed Tom Brady Trading ... watching the episode where Mac builds the Ass-Pounder 4000 which is an exercise bike that has a penis coming out of it to motivate you ...

One clip from the trailer showed Brady reacting to a joke McElhenney made in season 1 of It’s Always Sunny in Philadelphia. “Maybe break his arm,” McElhenney says as Mac in the show.