I had this one dream i can vaguely remember from when i was younger. Starts out- i was in my classroom (elementary school) at night. me and my friend josh were hanging out there and the teacher was watching us or something. she left for a minute. then josh said, "meet my friend" this creature or whatever it is walks in. it has a pig's head carved out of wood for a head. i remember it was wearing some wig, long blonde hair. it was wearing a sky blue bath robe. it didn't talk, but josh was talking to it, and it started hugging him. i was just kinda sittin in there, then it turned and looked at me. i screamed and ran for the door, but it was locked from the outside. i shouted something like "help me, it's an evil spirit, then the last thing i saw were it's sharp nasty teeth. then i woke up. anyway it freaked me out. I don't think it really means anything, it was just one of those random, bizarre nightmare's.
I have a few thoughts and hope they can help. Maybe first consider the setting of the dream- why a school setting, rather than any other type of place (home, airport, church, etc). Sometimes things which come across as really frightening in a dream are things which your conscious self avoids thinking about, and that is why they seem so scary. Maybe step back and try to observe and reflect without the fear, somewhere in that might be the important message of your dream.