Sleeptard
Someone who sleeps every day, all day and is a hassle to wake up!
Sonia, you're a sleeptard!
sleeptarded
The state of mind that a person is acting more goofy than normal due to lack of sleep i.e. slap happy
I am so sleeptarded that I skipped to my car in the parking lot.
sleeptarded
Being tired enough to the point that it affects your mental capabilities.
Man I was so sleeptarded that i failed my math test.