One of my goals as a photographer is to keep my subjects relaxed while having their portrait made. The best way I know to do that is to tell short simple jokes. Here are a few light bulb jokes you might enjoy.

How many photographers does it take to screw in a light bulb?
Five, one to screw it in and four to say, “I could have done that!”

How many psychologists does it take to screw in a light bulb?
The light bulb must want to change.

How many lawyers does it take to screw in a light bulb?
How many can you afford?

How many art directors does it take to screw in a light bulb?
Does it have to be a light bulb?

One
How many psychics does it take to screw in a light bulb?