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AUSTIN, TEXAS, (CBS) — A Christmas light display is causing panic. And even 911 calls.

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A Texas family recreated a scene from “National Lampoon’s Christmas Vacation” for a contest — where Clark Griswold dangles from the roof while trying to put up Christmas lights.

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For some people, it looked a little too realistic. Some rushed to help, others even called 911.

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Since then, the family has added a sign to the bottom of the display that explains the decoration.