Chris Pratt stopped by The Ellen DeGeneres Show on Friday to promote Guardians of the Galaxy Vol 2. In honor of Mother’s Day, the pair decided to play a few rounds of “Speak Out,” which apparently is one of Chris’s mom’s favorites. If you’re not in the know, that’s the game where you wear a plastic mouthpiece that holds your lips open while you try to say phrases clearly.

It was all going really well until Chris got the phrase, “I’m gonna bump you.” Hilarity ensued! Watch Chris and Ellen lose it below:

Video Credit: YouTube/TheEllenShow