Is it normal to sleep for 12 hours?

Perfectly normal. Its good for ya!
Though apparently regularly sleeping longer than 8 hours can actually be slightly bad for you in the long term. So says some newspaper or the bbc or something.

Yea on weekends and summers a lot of times I'll sleep for twelve hours.

Iv slept 5days straight that was after a 4day continuous party wow that was fun lol

for an unknown reason when I was 14, I slept for 3 days on a row... my parents force me to be awake , although I wanted to keep sleeping.

enjoy it while you can. this thing called real life hits you right after high school, or college, it's a real kick in the groin so far. no naptime at the office either

I sleep for 16 hours these days... i dont do shit with my life so i sleep a lot.. i guess its normal

I always sleep longer on weekends and holidays.

That's about average for me at the weekend! :)

it is for me. AHHH, the good life.

i think its normal. One time i slept for 15 hours , fuk it felt fukend good.