Should it really be a lightbulb?
Ten. One to actually change the lightbulb and nine to bring refreshments
I don't know, Vigo and see. (best read in Yanosh's voice)
Four - three to cut a hole in the roof and one to change the bulb.
None, because they keep on asking why all of the other light bulbs in the house aren't being changed at the same time.
I've got this neat candle holder...