As explained by host Ellen DeGeneres, during the game, players must answer whether they "have" or "have not" done the things pointed out in a series of questions.
DeGeneres began the game in a PG-13 tone asking the actors if they'd ever stolen anything from her dressing room, and later spiced up the game, asking if they'd ever been to a nude beach, had a one night stand and sexted.
While all participants where truthful about their answers during the game, Stone and Garfield -- a couple in real-life -- failed to answer all of DeGeneres' questions during the interview.
"You two have great chemistry," DeGeneres pointed out at one point. "Do you all rehearse before you kiss? Do you kiss before you kiss to make sure that you're gonna kiss okay?"
When neither Stone of Garfield answered the question, Foxx jumped with his thoughts on the subject.
"Yeah, I mean. It just looks so natural, right?" the actor, 46, joked. "I say its great acting," he added later.
You can check out clips from the trio's interview with DeGeneres below.
[The Ellen DeGeneres Show]
Kris and Bruce Jenner divorcing
Aaron Carter will 'shut up' about ex Hilary Duff