Don’t mess with this 11-year-old ...

The 11-year-old girl, who goes by the nickname Muffin Top, threatens to “go off” on the Casanova if he breaks her friend’s heart.

In the feisty message, Muffin Top throws out some pretty scandalous accusations.

She accuses Payton of kissing his own cousin, dating “an estimated 50 girls” and cheating on two of her best friends.

The note.Source:imgur

The girl’s only explanation for the young Casanova’s behaviour is that he must be “on THE WEED”.

The note was posted on Reddit by user xrazors and has been viewed more than 1.5 million times.

It reads: “Payton,

“You’re a PLAYER and nothing more! You cheated on TWO of my BEST friends ...

“Now you’re trying to get with my String Bean! (Skylar)

“And if ya’ll do end up together — which I hope you don’t — you better not hurt her!!!

“And if you do then me, Kenzie, Sierra and Felicity will go OFF on YOU!!

“And, you’re messed up in the head because you DATED + KISSED your cousin!

“My conclusion is you were on THE WEED.

“I hope you live a very happy life knowing that you’ve dated an estimated 50 girls.

“MAN WHORE.

“Your enemy,

“Muffin Top.”

This article originally appeared on The Sun.