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Gwyneth Paltrow, Robert Downey Jr.

Mike Marsland/Getty Images

Lesson learned? Don't call Gwyneth Paltrow a snob!

The actress gave Robert Downey Jr. a playful slap during a press conference in London for Iron Man 3 this past weekend.

Paltrow responded to a question about early reactions to the latest installment of the action-packed franchise saying that she was "really surprised" by the rave reviews and "loved it."

Ever the jokester, Downey Jr. quipped, "Shocked? You're such a snob."

The actor then went in to kiss Paltrow on the cheek as an apology, only for her to gently slap his face away from hers.

It's not the first time that the two have jokingly bickered while promoting Iron Man 3. Paltrow recently spoke in fluent French at a press conference for the film in Paris.

RDJ mocked his costar by saying, "I would have spoken French but I was raised by wolves...They don't teach French in jail!"

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