Ben Affleck and Matt Damon for the win!
The "Superman v Batman: Dawn of Justice" star stopped by "Jimmy Kimmel Live" after the 2016 Oscars on Sunday, where he looked very different.
Check out the clip above to see how Ben snuck his BFF Matt Damon into his interview with Jimmy Kimmel!
Affleck started the appearance seemingly wearing a fat suit. But, after his large belly started moving, a sweaty Damon popped out and surprised Kimmel.
Though Matt was met with roaring cheers from the audience, Jimmy was not happy. "This is not a guest segment!" shouted Kimmel. "This is not a guest appearance!"
"This feels AMAZING," Matt declared, clearly enjoying the fresh air and pissing off Jimmy.
"You're ruining the Oscar show," Jimmy said to Damon. "Nobody wants you here!"
The crowd started to boo the comedian, which pumped up the Oscar-winning actor even more.
"I still feel like Dorothy, this is wonderful!" Matt hilariously confessed.
For those of you who don't know, Jimmy and Matt have had an ongoing faux-feud for years ... which is why the comedian had "The Martian" star escorted off set.
We still think Affleck's surprise was pretty epic -- what do you think about Ben and Matt's guest appearance? Sound off below and check out the gallery above to how more stars celebrated the 2016 Oscars!