(USA TODAY) Jennifer Aniston, whoco-hostswith Ellen DeGeneres today, stars in a funnyFriendsreunion to promo the show.

She shows up at Matthew Perry's house at 8 a.m. asking for advice because he co-hosted with Ellen recently. He's a little uncomfortable, wondering why she's there so early.

"What are you talking about? We're friends," she replies. Har, har.

Then she confuses him with David Schwimmer. And soon after, out comes Cox, who has spent the night with Perry. Gasp!

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