Two. One to take out the bulb and drop it, and the other to try and sell it before it crashes.
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Bike helmets don't fit hippos
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If Trump gets Alzheimers his IQ will go up.
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Because all his other wives support Hillary.
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One. He gives it to six Californians, thereby reducing the problem to an earlier joke...
In earlier work, Wiener [1] has shown that one mathematician can change a light bulb.
If k mathematicians can change a light bulb, and if one more simply watches them do it, then k+1 mathematicians will have changed the light bulb.
Therefore, by induction, for all n in the positive integers, n mathematicians can change a light bulb.
Bibliography:
[1] Wiener, Matthew P., <11485@ucbvax>, Re: YALBJ, 1986
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Hey, bud!
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Buy a deck of cards.
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