All of them actually. Two to hold the ladder and one to change the lightbulb.
Only one. Just as long as you hand him the damn lightbulb.
One.
He wanted to sing higher!
Two. One to hold the ladder and one to screw your mother - I mean light bulb!
The silence of the lambs
With its buccaneers!
Three. One to administer the anaesthetic one to extract the light bulb and one to offer the socket some vile pink mouthwash.
One. Vegans have the same capability of changing a lightbulb as non-vegans.
There's Google.
He still hasn't found what he's looking for.