heard from my grandma: that last last night, i kept on mumbling then suddenly i woke up and shout.... -_- then i ask her what am i mumbling, she said she dun bother to hear unless i mumble some 4D numbers.... then i said what if i really mumble 4D numbers but u missed!!! haha then she said last night i didn mumble... thats good!!! well, i didn know that i can talk in sleep!!! xP