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Watch Kristen Wiig Break The First Rule Of 'Ghostbusters'

Don't worry, she didn't cross the streams.

Kristen Wiig is getting ready to strap on the proton pack and suit up as one of the new "Ghostbusters," in the reboot directed by Paul Feig and starring Melissa McCarthy, Leslie Jones, and Kate McKinnon. The movie isn't due out until next year, but shooting begins this summer, so it's time for Wiig to gear up and get out the message: Like all good Ghostbusters, she ain't afraid of no ghosts.

Except she's TOTALLY afraid of ghosts.

Wiig broke that cardinal rule of being a Ghostbuster during an appearance on The Ellen Degeneres Show this week, when Ellen pranked her with a ghost in a box. Wiig's reaction should give you a good idea of how she'll fare when she teams up with McCarthy, Jones and McKinnon against the Slimers and Stay-Puft Marshmallows of the world.

It's not that Venkman, Spengler, Stantz and Zeddemore weren't afraid from time to time. In fact, maybe that puts Wiig in good company. We'll give her a pass, as long as she doesn't cross the streams… because THAT would be bad.

(via Vulture)