Obviously, you know Mariah Carey — the hit-making, chart-topping Songbird Supreme.

Well, Mariah is super close with her nephew, whose name is Shawn M. All lambs like myself know that he's always been a huge part of her life.

Apparently, he and Mariah have this inside joke where they text each other "Happy Thanksgiving" on St. Patricks Day.
Listen, Mariah's the Queen of Christmas/festivity, so it makes sense in my book.

Anyway, Mariah accidentally sent that Happy Thanksgiving text to a DIFFERENT "Shawn M." this year — Shawn Mendes!

Yep, she shared a screenshot of the hilarious mishap on Twitter, captioned, "My cousin Shawn M. and I have this silly joke where we tell each other Happy Thanksgiving on St. Patrick's Day. Shawn Mendes found out about it today. Sorry, Shawn!"
My cousin Shawn M and I have this silly joke where we tell each other Happy Thanksgiving on St. Patrick’s Day ☘️ @ShawnMendes found out about it today.. sorry Shawn!! 😂
I'm glad Shawn loved the moment, too.
How legendary...this wrong text alone has 22 No. 1 records combined.
This isn't the first public interaction between the unlikely but legendary duo. Just last year, Shawn posted this selfie captioned, "Grateful 💙. The sun, coffee, my health, my family, old Mariah Carey songs, music, humans!!!"
Mariah soon after tweeted an iconic response, writing, "Grateful❤️. The sun, tea, my health, my family, old Shawn Mendes songs, music, humans!!!"
Grateful 💖 The sun, tea, my health, my family, old Shawn Mendes songs, music, humans!!!
And Shawn loved that moment, too.
🤣❤️❤️ https://t.co/WxdYGFSn9n