Mila Kunis [1] and Ashton Kutcher [2] sat down for an interview with Jimmy Fallon [3] on Monday night, and after explaining the story behind their charitable Quarantine Wine [4], they played a round of Jimmy's latest game, "Voice Swap." The game was pretty simple, but Mila could not keep it together while playing — and we're sorry to say that she was just plain terrible at it. Of course, Mila and Ashton just spent the entire time messing with one another . . . and going into far too much detail about their bowel movements. The game ended with a topless Ashton, and Mila confessing that her inability to hold in her laughter is the exact reason she's never gone on Saturday Night Live [5]. You can watch all the hilarity go down in the video above.