Moist snuff

Dipping tobacco is a type of finely ground or shredded, moistened smokeless tobacco product. It is commonly and idiomatically known by various terms—most often as dip and sometimes as rub. It is used by placing a lump, pinch, or "dip" of tobacco between the lip and the gum. The act of using it is called dipping. Typically, before dipping, the act of "packing" is performed, where the user places the "can" in between their thumb and middle finger, then flicks their index finger onto the lid of the can. Dip is colloquially called "chew", "snuff", or "chaw" among other terms; because of this, it is sometimes confused with other tobacco products—namely nasal/dry snuff

Dipping tobacco evolved from the use of dry snuff in early American history. Up until the late 1700s, dry snuff was taken nasally, but then early Americans would take snuff orally by chewing the end of a twig until it resembled a brush, and then "dipping" the twig in the snuff and placing it in their mouths until the snuff dissolved. Using dry snuff orally eventually evolved into modern day moist snuff, with Copenhagen introduced in 1822, and Skoal introduced in 1934. Most varieties of dipping tobacco are much more recent inventions.

Today, moist snuff is available throughout the United States. However, it is typically more popular in rural areas and the South than in large cities. Dipping tobacco is predominately used by males. Also, dipping tobacco has a similar presence in Canada.

Dipping tobacco is packaged in "tins", although they are not typically completely metal anymore. Dipping tobacco is also available in "rolls", "logs", or "sleeves", which is a package of 5 tins of tobacco, a similar concept to that of a carton of cigarettes. Ten tin rolls were also available in the past. Another package of dipping tobacco is the "tub", available in only select brands, equivalent to 6, 10, or 12 tins.

Before opening the can/tin of tobacco, users typically "pack" the tin, similar to how cigarette smokers pack a pack of cigarettes. This is done by placing one's thumb and middle finger on the sides of the tin, and then quickly turning the tin and flicking the wrist so that one's index finger taps the top of the tin.

Unlike snus, which is most often placed between the upper lip and gum, dip users or "dippers" tend to use the lower. Dipping in the upper lip is unusual, though when done, it is colloquially termed an "upper decker" or "top lip dip". The dip rests on the inside lining of the mouth for a period depending upon the user's preference—often 20–40 minutes.Nicotine and other alkaloids found in tobacco are absorbed in saliva sublabially by the inferior or superior labial arteries. Buccal and sublingual absorption may also occur.

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Wikipedia