Damon then appeared as Brady in full-uniform instead and attempted to give an interview as the NFL star much to the audience's delight.
"Why are you still in uniform?" Kimmel asked. "I just haven't had time to change because I've been fired up," Damon replied. "I kinda don't ever want to take it off."
Convinced that he had been tricked, Kimmel removed the helmet to reveal Damon's identity. The late night host then kicked the actor off the show and explained that because he did not sit down on the couch, he would not be counted as a guest.
"Your balls are flat!" Kimmel yelled as Damon was carried out, a reference to the Deflategate controversy that previously plagued Brady.
The segment was Damon's latest attempt to get onto Jimmy Kimmel Live! as part of the duo's ongoing, yet fictional feud.