I'd Buy You A Monkey

What am I, 19? I have a lot of male friends, most of them in a +/- 3 year range of my own age. I am the ONLY one who does not have any sort of body clock. I sleep until something wakes me up, I stay awake until I have to sleep. Usually, it works as 18 hours on then 12 hours off (sleep). I wish we had a 30 hour day. Sunday night I slept for 4 hours, that usually doesn't bother me but I was tired all day yesterday, I tried to take a nap, but as usual, I couldn't. I went to bed at 9:30pm and woke up this morning at 11:00am... 13.5 hours of sleep and I was still groggy. I set the alarm but didn't turn it on. My biggest beef is that my friends "naturally" get up at 7 or 8 and being that I went to bed that early, shouldn't I just wake up after 10 hours of sleep? I can't wait to grow up.