Only one, but the bulb has got to really WANT to change.
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Three skunks fighting over a pickle
First dog: My master calls me Furball. How about you?
Second Dog: My master calls me Sitboy
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Seven. One to change it and the other six to sing about how good the old one was.
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6: 2 to screw in the bulb and 4 to testify that it was lit from the moment they began screwing.
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Three: One to screw it in, and the other two to help him down off the keg.
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His breath.
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