Unscrew jokes

What's the difference between a lightbulb and a pregnant woman? You can unscrew the lightbulb.

What's the difference between a screw and a hooker? You can't unscrew the hooker.

What's the difference between a pregnant woman and a light bulb?

You can unscrew a light bulb.

What is the difference between a lightbulb and a pregnant woman?

You can unscrew a lightbulb.

What's the difference between a pregnant one and a light bulb?

One you can unscrew.

What's the difference between a pregnant girl and a light bulb?

... You can unscrew a light bulb, but you can't unscrew a pregnant girl.