Mine's thinking I'm hearing the door knocking. I don't know why but I hate the sound of someone knocking at the door.
Often, when we've got tele on or other sound, I can swear I hear the door knocking. Nobody else hears it but I'm convinced, so one of them go and check, but nobody's there.
The worst time it happens, is when I'm just coming out of sleep and I hear a loud knocking at the door. Jump out and rush to door, but of course nobody there.
I also hear my mum calling me occasionally, very odd. I even rang her one time to see if she was ok.
Helena