One. They're efficient and don't have humour.
They have a sad history of not finishing off races.
Because deep down they're real nice
Look a squirrel!
Doesn't matter how many femenists try, they can't change anything. Alternatively, they just hold it up and wait for the world to revolve around them.
Just one, if you put it in the right place.
We may never know the truth.
Prism (Note: I made this joke up. Sorry if this little note refracts from the humour.)
Well, chiropodists like jokes. But opticians like them .