Health experts from across Denmark, including the country’s National Health Institute, confirmed the trend to DR. Independently, Motherboard found multiple threads on Scandinavian forums where users discussed placing nicotine pouches on or up intimate body parts.

A student in Norway, who asked to remain anonymous, also told Motherboard about how he had experimented with placing snus inside his foreskin. “I was bored and about to take a snus and masturbate, and my curiosity got the better of me,” he said. “So I tucked it in ... I got a cold sensation from the menthol."

(Full story at https://www.vice.com/en/article/5dbv78/young-scandinavians-are-sticking-nicotine-pouches-up-their-asses )

I found this while helping a friend look for smoking cessation products. I'm not sure what to say, other than, "there are better things to put up your ass."