Then there are the drummer jokes that are also lightbulb jokes
Q How many drummers does it take to change a lightbulb?
A1 None, they have a machine for that now
A2 Only one, but three roadies - one to set up the ladder, one to help him up the ladder and one to turn his hand for him
A3 Four. One to put the bulb in and three to talk about how much better John Bonham would have done it...