Weiberdonnerstag or Weiberfastnacht, "Women's Thursday", is a dangerous day for any well dressed male to be out and about.
Thursday before Ash Wednesday is the first day of Carnival, and "Women's Carnival Day" in Germany's mainly Catholic Rhineland cities. Where it is definitely not a good idea for any man to wear his favorite necktie when walking along streets in Cologne, or nearby towns.
None will do so willingly unless they are tourists who have no idea of its significance. Or someone who, for whatever reason, has lost complete track of time and does not remember what time of year, or day of the week, it is.
Perhaps even an unsuspecting delegate at one of the international organizations based in neighboring Bonn, who has not been warned and is due to attend something important.
In that case he will make quite a statement when entering the conference room.
Unlike German Carnival celebrations in other regions, during the 24 hours of Women's Carnival Day, any man in the Rhineland area knows better than to wear a necktie. Unless he specifically wants it to be cut off and displayed as part of a collection, anywhere from inside a bank to the local medical center. Or put together by the "hunter", or even the "hunted" with other remnants, and used as a trophy belt.
A tie is considered to be a symbol of a man’s power, so when the festivities are taken over by women it is a case of Schnipp-Schnapp and "off with the ties".
He will receive a "Bützchen", a little kiss, in exchange for the loss of most of his necktie, but if there are women anywhere in the vicinity, carrying pairs of extra large scissors, it is still better to run as fast as possible in the opposite direction.
Although there will be a chase, and more often than not anyone who is pursued is also caught, so special, ugly, ties are bought just for the occasion.
Nevertheless if the victim was not amused when his necktie was cut to a stump, a law allows him charge his scissor bearing attackers in court in front of judges, and claim damages.
In Cologne the carnival is opened at 11.11 am by the three traditional figures: the Prince, the Peasant, and the Virgin who is always a man dressed in a rather fetching medieval maiden's outfit, and immediately women symbolically assume power over their male-counterparts.
Conservative workers and housewives transform into thousands of mischief-making women in multicolored fancy dress, who descend on local towns and cities to celebrate; taking over City Halls, playing pranks on any passing males, or even one who just happens to be stationary for a few seconds.
On Women's Carnival Day those collecting tickets, selling newspapers, looking in a map, including policemen, are not safe.
That dentist appointment? Your hygienist might be wearing vibrant colored upturned pigtails and a clown's outfit complete with extra large shoes, but don’t let it worry you.
Thought you might pick up some cold cuts for lunch? Behind the counter will probably be someone wearing a curly wig, their face decorated with silver star shaped sprinkles and a bright red bulbous nose, but those sprinkles are stuck on with special adhesive and won’t decorate your slices of roast beef.
It's an unofficial holiday and most businesses will shut after 1 pm. One reason being the majority of female employees will no longer be there, while another is any remaining male employees would rather not be there.
With a few exceptions there are no parades, and all the "partying" happens in the bars, in close proximity to a never ending supply of beer, and out and about on the streets.
An unmissable part of Rhineland and Köln Carnival culture now, but how did it begin.
Well as a part of German Carnival history it could almost be a fairy tale, because it all started with a group of washerwomen in the small town of Beuel, which lies along the banks of the Rhine River not far from Cologne.
As the sun shines longest on that side of the river it was the area for Washer Women, because their freshly washed linen could be put out on the grass knowing it was fairly certain to dry during the day.
It was 1824 and again the annual carnival. Their men were off celebrating, not expected to reappear for days, and as usual wives had been left behind surrounded by piles of washing. Just the same as every other day.
Some of the washer women decided "Enough was enough", and the group they founded, "Alten Damenkomitee von 1824", the Beuel Women's Carnival Committee, still exists. And they certainly were not all Alten, "old", women, either in the 19th century or now.
As it was almost unheard of for women to have any rights of their own in those days this was in effect a revolution; a revolt against male oppression, and it became the first women’s rights movement in the Rhineland area.
The women came into town and stormed City Hall, taking the key to the city as a symbol of emerging power, freedom and rebellion against their husbands.
Over 180 years later still hold a procession, and their velvet clad Washer Woman Princess "reigns" from November 11 until Ash Wednesday. The town hall is raided, as are many others, but of course now everything is an eagerly awaited television spectacle.
At the same time until relatively recently anything that took place during Weiberfastnacht, Women’s Carnival, could not be used in a divorce court. A relief to many no doubt.
Not for nothing are these days known as "The Fifth Season" and "The Crazy Days".
It is a long way from the days of The Washer Women of Beuel, their lawns covered by drying linen, tempers frayed because their husbands were off on their annual fun and games, and the beginnings of an early feminist movement.
Now a Carnival in Cologne without the "high jinks of Weiberfastnacht" would simply no longer be a Rheinland Carnival.
Cologne Carnival illustrations: Weiberfastnacht in Bitburg courtesy volksfreund.de, all others via de.Wikipedia. The black and white photo of Beuel Women's Carnival Committee was taken in 1900.