"Only kings, presidents, editors, and people with tapeworms have the right to use the editorial "we.""

This quote by Mark Twain is a funny method of saying that just those in positions of power, such as kings, presidents, and editors, deserve to speak on behalf of a group. The addition of "individuals with tapeworms" is an amusing way of saying that nobody else deserves to use the editorial "we". This quote is a tip that only those in positions of power deserve to speak on behalf of a group, and that nobody else must try to do so. It is also a reminder that those in positions of power need to use their authority responsibly and not abuse it. This quote is a funny way of reminding us of the value of appreciating the power of those in positions of authority.