"The face that you give is really just, you should do nothing. That's the key. ... The worst thing you can do is overact."

Chris Pratt continued his Jurassic Park promotional duties with an appearance on Conan on Thursday night that started off with a fright.

"Oh geez! Are we doing a bit right now?" he asked after the host suddenly scared him. "The face that you give is really just, you should do nothing. That's the key. ... The worst thing you can do is overact."

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