Have you ever woken up somewhere and not know wtf was going on?

Wow. I just woke up from the couch a couple minutes ago. Apparently I fell asleep which i dont remember doing. i had this crazy dream that my dad came home from somewhere and i was yelling at him then he sat on the couch and i was still talking to him but the next thing i know i'm waking up on the couch. so i went over to his room to see if he actually came home and he's asleep in his bed meaning he did return from his friend's birthday party. it's pretty freaky but i don't know what was a dream and what actually happened. I do know the cause of my confusion... alcohol and probably too much of it. The really scary part, scarier than discovering i must have passed out, is finding out what i said to him, i guess i'll see in the morning..

i feel quite fine now, tired and a little hungry, but just waking up and not knowing how the hell i fell asleep or what happened over the past four hours is still tripping me out. There's some Inception thing going on over here, what was a dream and what was reality? Has this happened to anyone? Good night.