plural

Five surgeons are discussing who makes the best patients to operate on.

The first surgeon says, "I like to see accountants on my operating
table, because when you open them up, everything inside is numbered,"

The second responds, "Yeah, but you should try electricians. Everything
inside them is color-coded,"

The third surgeon says, "No, I really think librarians are the best;
everything inside them is in alphabetical order."

The fourth surgeon chimes in: "You know, I like construction workers.
They always understand when you have a few parts left over at the
end and when the job takes longer than you said it would."

But the fifth surgeon shuts them all up when
he observes: "The French are the easiest to operate on. There's no
guts, no heart, no balls and no spine. Plus the head and ass are
interchangeable."