I'm an engineer, what can I say?
The paper towel dispenser in the bathroom never works because the paper towels get jammed up inside and when you spin the little thingy to make them come out, they just get stuck even farther away from the dispensing hole. One of these days I'm going to take it apart and figure out how it works so that I can fix it every time it breaks. I'll probably get in trouble for damaging it or something but I don't care.