Here he is demolishing a Tory who challenged him on a procedural point a couple of days ago:
Sarah Mackie @lumi_1984
Oooooft.
Bercow: 'I have no intention of taking lectures on doing right by Parliament from people who have been conspicuous in denial of, and sometimes contempt for it...and I will not be pushed around by agents of the executive branch'
Full version:
I have no intention of taking lectures on doing right by Parliament from people who have been conspicuous in denial of, and sometimes contempt, for it. I will stand up for the rights of the House of Commons, and I will not be pushed around by agents of the executive branch. They can be as rude as they like, they can be as intimidating as they like, they can spread as much misinformation as they like, it won't make the slightest bit of difference to my continuing and absolute determination to serve the House of Commons. And unlike some people in important positions, who of course are elected constituency members but have not been elected to their offices here, I have been elected, re-elected, re-elected and re-elected as Speaker to do the right thing by the House of Commons. That's what I have done, that's what I am doing, and that's what I will go on doing. That is so crystal-clear that I feel sure it will satisfy the honorable gentleman.