Ah, memories. My sister told me once that, when I were a lad and a girlfriend and I used to disappear to my room, supposedly to "listen to music", which we turned up loud believing it would cover any noise we made, the light fitting in the living room (which was directly beneath my room) would start to swing from side to side. My father would look up from his paper, roll his eyes, look at my mother and harrumph. Fair play to them for not disturbing us.