How manyh grad students does it take to change a light bulb?

One, but it takes 7 years.

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Change Jokes More Change Jokes

How many population geneticists does it take to change a light bulb?

It's independent of population size.

How many light bulbs does it take to change a light bulb?

Two. The light bulb you remove and the light bulb you replace it with.

Light Bulb Jokes More Light Bulb Jokes

How many line dance instructors does it take to change a light bulb?

A. Five!...Six!...Seven!...Eight!

How many cafeteria staff does it take to change a light bulb?

Sorry we closed 18 seconds ago and I've just cashed up."

7 Year Jokes More 7 Year Jokes

What's worse than getting 7 years of bad luck from breaking a mirror?

Getting a lifetime of bad luck from breaking a condom.

How manyh grad students does it take to change a light bulb?

One, but it takes 7 years.