Chris Pratt, Jennifer Lawrence diss each other during BBC's 'Playground Insults' game

Looks like Jennifer Lawrence and Chris Pratt sweated it out at a recent insulting game during their trip to London to promote their new film 'Passengers'.

The duo did not hold back as they jokingly competed in a funny battle of insults while stopping by BBC One's 'Playground Insults', teasing each other to deliver the "killer insult," reports Us magazine.

Pratt insulted his costar by asking her things like "Why did they call it Joy?" and telling her that she has "so much fake hair" that if she committed a crime "some Ukrainian girl would be convicted" instead.

Lawrence, in turn, teased, "You are so stupid that your 3-year-old son has probably taught you everything you know," referring to his adorable son, Jack Pratt, with wife Anna Faris.

"Where do you keep your Oscar?" Lawrence asked Pratt, touting her 2014 'Best Actress' award for her role in 'Silver Linings Playbook.'

"Um, that was really good," Pratt admitted of her diss, before attempting a greater insult, saying, "You were given an Oscar for best actress, you would also get one for being the worst."

Pratt, however, redeemed himself by delivering the winning (NSFW) insult saying he could feel Lawrence's "d**k" during their sex scene in the movie.