ME: It's the furnace.
ANNIE: You're kidding?
ME: No, and think there's something IN the furnace trying to get OUT.
So, I schlep out to the kitchen and call our oil/furnace company, and I tell the guy on call, who in this instance happens to be the owner, what the furnace is doing:
ME: Bang bang SCREEEEEECH SCREEEEECH BANG! LOUD LOUD JET NOISE BANG SCREECH.