Originally posted by adidas
you also need to take into account the time difference here...

your REM is 3 minutes tops? your dreams can last hours even days... now let common sense take it from there and it doesn't seem so impossible. *
Bingo!!! Adidas gets the prize: A kiss in the cheek from WerBurn!!!!

Since dreams aren't in real time then it is most likely that the brain will just incorporate any sounds and feelings coming from the waking world into the dream. One of the funtions of dreaming is to guard your sleep and detach oneself from the world to maintain this state with greater ease.