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Gone crazy or insane; irrational. Came into use after a number of workplace shootings by disgruntled U.S. post office workers.

The UK postal system is, like just about everything else in the UK after the socialist/communist/annarchist revolution here (not to mention the privatisation of the postal system courtesy of some money-minded old Tory crook), the laughing stock of the world. Important parcels and letters frequently go missing. I must have lost thousands of pounds worth of goods in the post in the last seven years, and it's not really surprising given that the postal workers of today don't seem to care a fig about their customers. Last year, for example, I was out when a parcel was delivered, so the parcel was returned to the depot. But, instead of making a record of it, the postman involved had simply thrown it in some storage warehouse and nobody knew where it was. It was only through persistence that it didn't join the other items which seem to be gone forever. Whilst I was in the depot, there was a woman complaining about a postman who'd forced a parcel of hers through her letterbox and, as a result, the contents of it (photos) had all been bent out of shape. I'm forever getting complaints from irate people who've never received the cheques I've sent. One of my Dad's friends used to be a postal worker and apparently, when the sacks of letters are emptied, there's always a few left behind which are disregarded. Smaller post offices are constantly being closed as centralisation takes over. You might as well just put your letter in a bottle and throw it in the nearest river.

Postal has a number of uses. Normally just used as slang for "gone crazy" or can actually mean the act of going on a shooting spree. The term started after several postal employees went on shooting sprees.

Years after the term was no longer popular a company called "Running with scissors" made an EXTREMELY AWFUL pc game called "postal" which simply featured level after level of badly simpulated shooting sprees across a number of venues such as marching bands, gas stations, military bases, etc... Despite the fact that, had things been left well enough alone, nobody would have ever known this game existed a numvber of events happened to make this game 10 times more popular(but no less awful). First the U.S. Postal Service tried to sue the company over use of the name and failed quite horribly when it was proven that nowhere in the game was there even so much as a single refrence to any actual postal workers. Later, after the coulmbine shootings, Senator Liberman and a group of lazy parents tried to blame increased violence among children on the Video Game industry and Postal got even more free publicity when it was used as an example of violence in games.

What the US Postal Service, Senator Liberman and the fat lazy parents who hate video games failed to realise that their efforts only served to make Postal 10 times as popular as it otherwise ever would have been and nobody who ever actually played the game enjoyed it or tried to emulate it in any way.

interjection: used to indicate that a situation may cause someone to go ballistic, postal, or otherwise angry beyond all reason. Usually used in a light-hearted manner; saying it when someone is actually about to go ballistic could be the last straw for that person. The term can also be used by magicians, particularly those who specialize in pyrotechnics.

to be caused death or injury by someone who has endured much aggravation or provocation up to and finally over the edge. The person executing the Virginia Tech has lost control and is hellbent on destrathroy'ing fools.

Back in the 90s, this person would be said to have gone postal, but now postal has lost its edge and a more contemporary, rugged version must be incorporated.

mad angry lost the plot. usually associated with the tropics or hot weather. similar to road rage
also similar to postal but not as extreme.