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snuff users in the third world often rub the snuff into the gums to give a quick fix, but overuse can damage gums and cause them to recede, eventually leading to tooth loss. if you want to use snuff, it's probably not a good idea to rub it into your gums.
wenn sie schnupftabak benutzen möchten, ist es vermutlich nicht eine gute idee, sie in ihre gummis zu reiben.