Joke Collection Website - Cold jokes - Why does a light bulb call America?

Why does a light bulb call America?

An old American joke. Because the end of an old American joke is usa and it is a light bulb, it must be playing an old American joke. The joke is, how many Americans does it take to change a light bulb? The answer is 20 1, one of them has changed, and the other 200 people call America.