I had an awful dream last night (Can anyone interpret?)?

I had a dream that we were at the house that we are getting ready to move into (We really are getting ready to move) and it was in the living room and I was sitting on the couch looking at this person just sitting there with their head down (I have no clue who this person is, but in my dream it was normal that this person was there???) all of a sudden this person flung their head up and looked at me, it was so creepy because his face looked just like the girl from the exorcist, and he just kept staring at me with greyish white looking eyes and making this horrible groaning noise. Then he started to cry and opened his mouth and it just kept getting bigger and bigger until his mouth was the size of his entire face (OMG creeps) then something shocked his arm and he got up and left, and I went about my normal business in the house as if it was no big deal??? WTF???!!! The house that we are moving into is a little old but I have never felt and erie presence or anything... I'm scaring myself