Sleepache 

When your are in need of sleep whilst your body aches.

Oh my god! I have sleepache!

Sleepache by Official English Language July 31, 2021

Sleepchew 

When you pack a chew while your in bed.

Oh my god babe. I told you not to pack a sleepchew when I just washed the sheets.

Sleepchew by Sleepchew July 6, 2020

Sleepaholic

One who prefers to sleep and live in a dream world rather than the real world, in other words, addicted to sleep, but not depressed.

Eliana's dreams have made her into a sleepaholic; boy they must be some good dreams.

Sleepaholic by Lucinda Dreamer May 10, 2010

sleepage 

term used when you need a massive amount of sleep

need sleepage NOW

sleepage by sir sleepage August 28, 2003

Sleepyhead 

Someone that sleeps a lot or is tired all the time.

"Wake up you sleepyhead!"

Sleepyhead by GGeeggee March 28, 2010

Sleepyhead 

One of the most amazing friends you will ever have. But dont expect to talk to them late at night, they like to go to bed around ten or so. Most of the time if you are talking to them they fall asleep. Even though they fall asleep a lot they are simply amazing. If you are lucky enough to have a sleepy head in your life, dont lose them. They are loyal, a great listener, and will do whatever it takes have to to make you happy.

I wish I had a sleepyhead as a friend.

Sleepyhead by MyrtleLynn April 22, 2010

Sleepchatting 

G-chatting as you are falling asleep, resulting in mostly incomprehsnsible half thoughts and many typos. Can also be seen on other chat / messaging applications.

Sleepchatting conversation:

3:33 AM Guy: have a good night
Girl: nihjy
Girl: night
typov
bvc im asleep
3:34 AM Guy: ha, k
3:35 AM Girl: uj hih
3:36 AM Guy: go to sleep

Sleepchatting by Sister of HRH,Queen of Heights June 4, 2009