For some people, Oct. 3 is just another day of the year (or your cousin's birthday -- hi buddy, this counts as a present!), but the indelible legacy of Mean Girlsmeans that today is so much more than any other day.

It's October 3.

To harness fans' resurgent interest in Mean Girlson Tuesday, the cast started a GoFundMe campaign to raise money for victims affected by mass shootings like the one that devastated Las Vegas Sunday night.

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Today marks the day in Mean Girlshistory when Cady (Lindsay Lohan) and Aaron (Jonathan Bennett) take their relationship to the next level. After merely admiring the back of his head during Calculus for weeks, Cady keeps her cool when her crush turns around to ask her what day it is.

"It's October 3," she replies with the perfect balance of indifference and temptation.

Mean Girlsis now 13 years old (which makes you approximately 74), and Oct. 3 is now a reliable internet holiday full of jokes and memes and -- mostly -- quoting that iconic line over and over.

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And what a day it is!

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Pretty much. Maybe we can finally make "fetch" happen.

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"Should be?" I think it is! Time to bust out the pink!

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In the past, cast members have gotten in on the celebration, including Bennett himself frantically asking what day it is.

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I'm not white, so this is incorrect. Anyway, it's October 3!!!!

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That's more inclusive. Happy October 3!!!!

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Wow who knew Oct. 3 was more than Oct. 3!

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I do this every day, but especially Oct. 3!!!

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Sorry not sorry, we'll miss you, enjoy your October 3!

Mean Girlsis enjoying extra momentum due to an upcoming musical adaptation on Broadway. Tickets went on sale today (BECAUSE IT'S OCTOBER 3) and the show will also celebrate in other ways.

Grool.