No, he is bound to the posessed and will soon try to lay with you to spread his demon seed. Don't ask how I know...my name says it all. All you can do is lay there and sleep while he gets stronger and will soon kill your whole family. Yes it's normal.
could be nightmares or your dad could be molesting him or maybe he is having seizures.....how the hell can we know? Go into his room one night and find out Sherlock.
She said she shares a room with him u idiot no need to sneak just turn around and look and if he is u can go with the help him along path or the keep it a secret and pretend u dont know path or the tell him u know and see how it goes path.
Mention at the breakfast table infront of your parents that the squeaking and moaning kept you awake last night, that should embarrass him enough to put a stop to it, lol X
How old are you? That must suck to share a room with your brother.