The origin is uncertain and therefore unknown. However, there is a theory that the garmnent was named after the heavyweight boxer John Sullivan who used to wear a similar garment in the boxing ring. The same company has been making this garment for 225 years
The long john, a type of pastry, is believed to have gotten its name from the term "long johns," which refers to a style of thermal underwear. The doughnut's elongated shape resembles the form of these undergarments. Additionally, some sources suggest that the name could also be linked to the British "long john" pastry, which has a similar shape but is typically filled with custard or cream.
Richard
He was Christian. He celebrated Christmas and Easter.
coureur de bois usually wore long johns, breeches(pants), a woolen shirt, and a jacket.
Princess Di.
Thermal Underwear
long johns Thermals union suit
Long underwear is "långkalsonger", in Swedish.
Long Johns is the British nickname for the long underwear which is worn on the legs underneath the trousers. They are usually worn as pyjamas during cold weather.
* long johns / long underwear * leather jacket * linen suit
long underwear / long johns logs (in the fireplace)
Liberty bodice Long johns
Egg nog, earmuffs.Escamoe. Earl grey.EVERYTHING!ass
Long underwear is commonly referred to as "long johns." It is designed to provide an additional layer of warmth during cold weather and can be worn under regular clothing. Other terms for long underwear include thermal underwear or base layers, depending on the material and specific use.
leotards, leg warmers, leather jacket, long dress, London Fog coat, lingerie, long underwear, long johns, loafers
According to Michael Quinion[2], "John" may be a reference to boxer John L. Sullivan, who wore a similar looking garment in the ring. This explanation, however, is uncertain and the word's origin is ultimately unknown.
Men's thermal underwear and more specifically long johns can be readily purchased online from companies such as Jockey Asda and Amazon. 'Outdoor' shops on the high street also sell thermal wear.