Can't say that that's happened to me. More than once, I've woken up, jumped out of bed and gotten ready for work/school/whatever only to realize that I still had hours and hours to sleep, though.

It means you had a good night sleep I think

Ive jumped out of bed early before, feeling bloody stupid!

Or that happens on a Saturday. You get up and get ready for work/school only to realize you don't have to go. That's happened to me before.

I think it only happens to stoners ;)

^^ actually the opposite happens to stoners, I had really bad insomnia when I smoked, then I stopped and was fine : )

^^ really? never had that issue back when I smoked =)

That means you had a very deep sleep most of the night, long hours of REM.

Do you remember ever going to sleep then, or were you just trying to sleep the whole night and never did?

I get more freaked out when I know I'm dreaming since I can control whats happening >_>