Anyone else ever not realized they fell asleep?

[Trilogy]

Last night the weirdest thing happened. I was in bed and I looked at my phone and it was like 2 AM. I then tried to go to sleep and I kept tossing and turning, and I was worried I was going stay up way too late. I then checked my phone again and suddenly it was 9 AM. It was weird because I fell asleep but I just didn't notice

 

[Tabula Rasa]

yeah that happens sometimes

 

[Bitter]

The other day I almost fell asleep while watching YouTube.