One of us is a plonker.

A Google search indicates that it is you:
http://groups.google.com/groups?q=&s...7jpcR-LzgGaWg&

Unless you are a Bush or in his pay, you must have an ulterior motive
for being so banal.

Have you ever considered politics?
You seem eminently suited.

Ulterior:
Lying beyond evidence.