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TikTok shocked to learn what the red Christmas light is really for

https://nypost.com/2022/12/01/....what-the-red-bulb-on

What the red bulb on holiday lights is actually meant for
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nypost.com

What the red bulb on holiday lights is actually meant for

A TikTok video, which has more than 19 million views, explains what the red-nosed bulb with strings actually does.
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