I'm going mad, hahahahahahhahaa

In the ceiling above my desk, there is an air duct, water pipe, some electrical thing, or a trapped miner making a constant buzzing-tapping noise. It sounds like a high-pitch, very fast woodpecker going in little bursts every other second. There is no rhythm. It's just err, err, err... err, err... err... err, err... errrrr... er, errr, err... err, err... errrr. Once you are fully aware of it, you can't ignore it. I'm usually in the lab away from it, but I don't know how some of the cubicle rats haven't gone crazy. I've been at my desk for all of ten minutes and I'm about to start screaming and rending my clothes. Err, err, errrrr... er er, errrr... I want to get up in the ceiling and beat whatever it is with a wrench until it buzzes no more.