Author's Note
The image is mine but it's irrelevant to the story.

Nightmare's POV
I went up to my room and played around with a puzzle and tried to put it together upside down out of pure boredom and the intense desire to be left alone but I suddenly had the most stupid idea ever and what if I hid underneath Slenderman's bed to scare him so I mischievously sneak out of my room and into his room underneath his bed and waited patiently.

Slenderman's POV
I told Mei to go to bed as I cleaned up in the kitchen and after a few hours I went up to my room and I laid down in bed but I heard soft snoring from underneath my bed and I quickly pull Nightmare out from underneath my bed with my own tentacles and dangling him upside down as he gives a startled gasp and I look annoyed.

Nightmare's POV
I must have dozed off because I was awoken by Slenderman dangling me upside down.......

Slenderman: What are you doing in here?! He asks me while I'm still half asleep.

Nightmare: Chill out it's just a prank bro....... I mumbled as I stumbled into my room and went to sleep there

Author's Note
Sorry if this seems rushed as I have to get ready for a doctor appointment soon I hope everyone has a good day.