What's The Word?

What is the only noun in the English language where all of the following are true?

• The singular version of the word is spelled exactly the same as the plural version. (Example: deer [one] and deer [many].)
• By adding an "s" to the end of the word, the resulting word indicates more than the singular version of the word but fewer than the plural version of the word.
• You add the "s" only when you want to be humorously insulting.

A prize goes to the first person who gets this right. (It's my riddle, so I get to decide what "right" is.)

--
Gill E. Wagner, Sage of Selling
President of Honest Selling
Founder of the Yellow-Tie International Business Development Association