Let there be light (not)

I switched the light on in the computer room last night and all the lights in the house fused. I was extremely puzzled by this, as I'd have thought that the wiring system would fuse itself when there were 34 things plugged in (and this is 34 things in the computer room alone, remember) - not when there was absolutely NOTHING plugged in. I can only assume that the electricity in the house has got used to pacing itself, and all the little volts had somehow built up at the electrical equivalent to the door of the computer room, and were all crowding there with nowhere to go, shoving and jostling and elbowing each other and saying oy stop pushing at the back there, until the moment I switched the light on - there must have been a huge cheer as they all tried to rush through at once, at which point the Fuse in Charge shouted RIGHT that's ENOUGH and slammed the door. What the Electricity Meter is making of it all I just daren't imagine - it mustn't know if it's coming or going.