I'm not sure if that's what they mean when they're talking about the fat-finger problem — somebody hitting the wrong key.

It doesn't take that many fat-finger mistakes to make you frustrated.

It’s an idiot fat-finger trade, obviously - 1.95m shares changing hands at 170p during the end of day auction.

There were no fat-finger errors in the 1960s equivalent of an Excel spreadsheet.

Fat-finger errors are a regular occurrence in the financial markets:

We bet someone made a fat-finger mistake.

However Nanex says the slide didn’t have the usual hallmarks of a fat-finger error.

It's called "fat-finger dialing" and it's a fairly common phone scam.

For years, consumer groups and federal regulators have warned about fat-finger dialing schemes involving alternative long-distance services.

Kristin Alexander of Seattle knows how easy it is to get snagged by a fat-finger scammer.

Call it fat-finger syndrome.

News outlets immediately began speculating that someone at the brokerage firm had committed a so-called fat-finger trade, in which a trader inputs the wrong number.

Fat-finger errors are a product of the electronic processing of orders which requires details to be input using keyboards.

And it remains unclear if the crash was driven by a trading error, such as a fat-finger, or due to the poor execution of a large trade.

Google shares plummet after 'fat-finger' fiasco

fat-finger: Verb: to mistype, as by accidentally striking more than one key on a keyboard/pad.

Automated systems within trading houses may catch fat-finger errors before they reach the market or such orders may be cancelled before they can be fulfilled.

Indeed, Tradeweb has a number of safeguards and warnings incorporated into its electronic markets to prevent 'fat-finger' errors of this type," the company said in a statement.

China Brokerage Firm Fined $85 Million Over 'Fat-Finger' Trades

The "fat-finger trade" hypothesis was also disproved when it was determined that existing CME Group and ICE safeguards would have prevented such an error.

In 2006, a fat-finger error by a trader at Mizuho Securities in Japan caused the firm to short sell a stock in an error that cost the firm 40 billion Yen to unwind.

The market drops a thousand points in a matter of minutes, and instead of seeing the obvious humorthey're now blaming the free fall on the so-called fat-finger syndrome — I see my 401(k) flashing before my eyes and am trying desperately not to weep.

People in the telecommunications industry who are familiar with PrimeTel say that in addition to snapping up familiar 1-800 numbers, the company may be trying to capitalize on people's fat-finger dialing mistakes by acquiring numbers that are just a digit or two away from a major company's number.

Digital drive: George Osborne thinks online tax returns could boost tax reveneus Carl Court/Getty Images The Chancellor's digital drive towards online tax returns has been labelled a "fat-finger tax" likely to punish millions of people and businesses for filling in forms incorrectly.

A fat-finger error is a keyboard input error in the financial markets such as the stock market or foreign exchange market whereby an order to buy or sell is placed of far greater size than intended, for the wrong stock or contract, at the wrong price, or with any number of other input errors.