Dream of white, old, sister, time, brother, house, night, glasses, creek, man, shirt, woke up, bedroom

I was in my old house, and it was at night time. Me, my dad, sister and little brother where in the bedroom, then we herd a creek at the front almost as if someone had opened it. We herd footsteps, then all of a sudden this old man was in our house, and was acting mental, and confused. He had a white T-shirt, some PJ's, and some really thick glasses. He walked into my room and started waving at us, that's when my dad tried to escort him out of the house, and that's when he droped something on the ground, so my Dad picked him up and threw him out of the house and that's when I woke up. What does this dream mean???