Watch Ben Affleck Sneak Matt Damon Onto Jimmy Kimmel Live

Ben Affleck tried his best to end a decade-long (fake) feud between Jimmy Kimmel and Matt Damon by sneaking The Martian actor onto the program.

When Ben Affleck was introduced, he walked onto the stage wearing a large coat that concealed a surprise guest. Once Affleck took his seat, Kimmel questioned the bulky appearance of the Batman V. Superman: Dawn of Justice star. "I hate to say it, but you've ballooned," said Kimmel.

Affleck replied, "I didn't know tonight was about body shaming."

Then Kimmel noticed movement coming from underneath the coat and opened it up to reveal Damon was strapped to his Affleck's chest with a harness.

Check out the hilarity in the video below.

Batman v. Superman: Dawn of Justice opens March 25, 2016.