Well, that's awkward.

After Jimmy Kimmel jokingly banned Matt Damon from his annual Jimmy Kimmel Live!: After The Oscars special, the actor was forced to sneak onto the show with his best bud, Ben Affleck!

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At the beginning of the program, Ben, 43, walked onstage with his 45-year-old actor BFF strapped to himself with a harness hidden underneath his coat — but it wasn't long until the late night show host, 48, caught on to their funny prank. "You are ruining my Oscars show!" Jimmy yelled to Matt before having him pushed off the stage!

Watch the funny video below.