I would be lying in my bed at night, afraid of the dark like most kids my age (I would have been around 7 at the time) and worried that the 'noises' would come. Let me explain... While my parents were in the room across the hall from mine--most likely watching a movie--I would be sitting in terror, as noises would sound themselves in my room.
It starting on just an ordinary night, I was already afraid of the dark and facing the wall since my bed was situated up against it just attempting to sleep. That's when I heard a sort of buzzing sound, like that of a bug, but at the same time it sounded like a croaking (think of the noise in the Grudge). My first thought was, 'Oh, it's just something electrical', but I had never heard anything like this sound. My assumption of it being something electrical was shot down when around the third or fourth time it happened I ran into my parents' room. I would dive onto the bed, wrap my arms tightly around my mother, and tell her that there were weird sounds in my room. She of course would sigh, tell my father she'd be right back, and then take me to my room to show me that there was nothing there.
By the time we got in my room the noises had stopped, it would be dead silent. She would smile at me and say, "See? I told you nothing was here, go back to bed." I had made her wait for a couple minutes, and felt that it was safe. Only when she had got up off my bed and closed the door did I hear it again. That night I sucked it up and went to bed eventually, but night after night it would happen again. I would get my mom, make her wait various times each night and as soon as she left they would start up again.
About a year later it stopped and only appeared on rare occasions, those rare occasions I only heard the noise for a couple of minutes before it left.
All I want to know is if someone's had an experience like this. Feel free to suggest what it might have been, but I don't know of anything man-made that would just 'start up' once a parent has left the room.
Thanks for reading,