flipping a cigarette single upside down in a pack is typically seen as a symbol of good luck or protection. The practice is commonly linked to U.S. soldiers during the Vietnam war 3 Ways to Flick a

NCI Dictionaries: Pack Year

I said, I may be a little long in the tooth for that. But, he figured there was a way he could write it, to make it work

Dual-Use Technology: Mentioned before, but to stress: items that can be used for civilian and military purposes (dual-use) often appear harmless e.g., a high-end drone, specialized software, night-vision goggles but might require licenses

authorities publicly announced the first seizure of some of the companys products, part of an operation confiscating 1.4 million illegal, flavored e-cigarettes from China

It worked for me, it's worked for others, it could very well work for you