Sleep-shitting 

When you are so tired that when you go to shit and you fall asleep on the toilet. This usually happens while using a public restroom.

After we ordered our food at the restaurant, my friend went to take a shit and fell asleep. He is always sleep-shitting every time we come here at 2 am.

Sleep-shitting by Rbruiz June 17, 2023

Sleep Shutting 

You close your laptop lid during sleep and don't remember it when you wake up.

You fall asleep watching a tv show on your laptop with the lid up on your laptop so you can see the screen, you wake up in the morning with the lid down. You have closed the lid during your sleep but when you wake up don't remember doing it.

Sleep Shutting has the same effects as sleep walking.

Sleep Shutting by Some Random Guy On The Web June 14, 2015

Sleepsitting

The act of staying up all night to wake up a friend early in the morning. This usually results in fucking up your own sleep schedule in order to help your friend.

Georgia: wow you've been going to bed at 9AM and waking up at 6PM, whats going on?
Garrett: Yea I was sleepsitting my friend since she had an exam at 8AM yesterday.

Sleepsitting by The Izzonator November 11, 2019