The know-it-alls

Let me tell you what would be a real treat:
A gathering of Know-It-Alls together at a meet
And with Know-It-Alls as far as you can see
Just think what the potential might come to be
Id' like to be there as a fly on the wall
To see the mayhem, bedlam, confusion and all
I can imagine them searching for a modest few
For anyone who's listen, to be repulsive to

It would be fun, but for them a great test
To find out just who is the biggest darn pest
And how long should such a meeting last?
Until all realized they are a pain-in-the-a_s

Perhaps at meeting's end some few would see
How totally obnoxious a Know-It-All can be