Screenshot by Chris Matyszczyk/CNET

When it comes to image, Wall Street's remains somewhere below that of Lance Armstrong and Anthony Weiner.

You'd think, therefore, that Wall Street types might have some sensitivity to how they're seen in the outside world. You'd also think that mud is the perfect gravy for a french fry.

At least that is the view of Brendan O'Connor, the former cook at the well-known four-wheeled New York food provider Milk Truck.

For he was cheesed off when some people from Glass, Lewis & Co came to his truck, ordered around $170 worth of food, and then decided to leave no tip.

A crime of omission on commission is not to be taken lightly in the food business -- as, one supposes, it wouldn't be appreciated on Wall Street. My own local restaurant has a lady who comes in and tips a pittance. She is not well-regarded.

Perhaps you might think that food trucks don't deserve tips. But on a $170 order, might it not have been a decent gesture?

So O'Connor took to Twitter and made the following statement: "Shout out to the good people of Glass, Lewis & Co. for placing a $170 order and not leaving a tip. @glasslewis."

It's possible that the "@glasslewis" part alerted the Wall Streeters to O'Connor's grief. So the company contacted Milk Truck and, suitably humbled, offered to pay $30 as a tip.

No, I don't have that quite right. As O'Connor himself wrote in the Awl, the company allegedly contacted O'Connor's boss and then he was fired.

Indeed, as O'Connor wrote in the Awl: "Obviously I knew it was a possibility that I'd get fired. I guess I had hoped that the owner would have my back if they complained, but that was a miscalculation."

Perhaps you can understand that from the Milk Truck owner's point of view. He has a small business to run. O'Connor admits he wasn't the finest of employees.

But what about the folks at Glass Lewis? Instead of reacting to the tweet by complaining, what if they'd slapped their foreheads in a public place and returned O'Connor's tweet like so: "We forgot the tip? Shame on us. We've been so bloody busy. We're on our way down to make amends"?

Wouldn't the company have come off rather better than it looks now? Currently, the #glasslewis hashtag is enjoying some painful commentary.

I have contacted Glass Lewis to ask for the company's view and will update, should I hear.

When someone offers you brusque bluster on Twitter, often they might be entirely full of cat food and last night's beer. It's sometimes even worth retweeting their nonsense, which can be decorated with badly spelled curses.

Just occasionally, though, isn't it worth considering whether the tweet might have merit?

O'Connor's tweet was mere sarcasm, the sort that you'd hear on Wall Street every day.

Doesn't Glass Lewis, a self-proclaimed "Global Governance Leader," believe in tipping on $170 worth of food?