Some brothers and sisters get on like a house on fire, yet others see sibling rivalry as part of their daily routine.
For these two below, we're pretty sure they fall in the latter category.
Imgur user EmmyCD uploaded a photo of a note one child wrote when his brother Ethan was leaving the house.
We're not sure if Ethan was leaving for good or for a short holiday but either way, he's not going to be happy when he returns.
The note reads:
"Ethan's gone list.
Take Ethan's bedroom
Take his money
Hammer his LEGOs
Rip Minecraft poster
Dye his carpet pink
Hammer everything he loves."