Q: How many ________ does it take to change a candlestick?
A: [Number of your chosen whatever, and explanation]
How many Barbarians does it take to change a candlestick?
A: Three. One to yank the old candle stub out and slam it on the floor screaming and stomping on it, and the other two to light the new candlestick...before throwing it on the ground screaming and stomping on it...
You get the idea!