Anyone who has a younger sibling will have inevitably had a falling out at some point, but one girl's angry - and very harsh - letter to her older sister has been sweeping the internet.
The woman from Auckland, uploaded the hand-written rant from her sister about her "eating all the food" to Facebook, and it's had nearly 10,000 likes so far.
The younger sibling didn't mince her words in the letter, which complained she had emptied the fridge and kitchen cupboards, even including a sketch of a hand with the middle finger held up.
She captioned a photo of the offending scribbling: "I swear she's a lil' brat. I don't even eat that much so idk [I don't know] what she's talking about. Fully draws the finger too."
The letter reads: "To my fat sister. I hate you because you eat all our food for lunch and you always say it's not you but you are always in the kitchen, you fat cow.
"That's why you have no friends - because you eat their lunch too, you dumb fat girl. That's why your bum is fat because you eat all the food.
"I hope no one marries you because you might eat his family too.
"I will call you my sister when you stop eating our food."
Signing off, she adds: "Bye ugly girl, I still hate you."