Because late-night interviews aren't hard enough, James Corden put himself and his guests into mouthguards on Tuesday night.
"These are gnarly," McCarthy said, with Corden noting, "You really can't talk about anything seriously."
Schaal tried though. "'I know how to stop ISIS' -; like, no one cares."
The three also tried taking sips of water from their mugs and blowing a few bubbles (using various techniques).
Watch the video below.
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