What doesOUT mean?
Burger King pranked cinema goers in Germany this month with an ad that turned the film "IT" into its “longest ad ever” with a punchline that mocked its rival mcDonald's. See why it's out video viral of the week below...
What does Out mean in " See why it's out video viral of the week below...". How does it differ from "See why it's video viral of the week below..." (without "out")

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I think that may have been a typo and the sentence should be "See why it's OUR video viral of the week below..." The sentence doesn't make sense with the word "out."

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I think they meant to write "our" so it's a typo. It should be "See why it's our viral video..".