Quote Originally Posted by Spartan Tartan View Post
I believe they are referring to military type challenge coins. If that is the case, there is a tradition (or sorts, the details often vary but the same overall point remains) that one person will "challenge" others from the unit and slap their coin on the table/bar/etc... If anyone is unable to answer the challenge and slap their own coin, then they owe a round of drinks to all others that do successfully answer the challenge.

If outside a particular unit, it tends to have a similar effect of challenging other service members. It is not necessary to "match" per se, but to respond in kind with a coin.

If the challenger is met by a full round of successful responses, then they them-self owe a round to everyone they just challenged (in effect they lost).

And I always have one in my sporran (or jacket pocket in the event that I'm not kilted)...you never know when it will come in handy!

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But to your questions: I am not a fan of pockets and would be unlikely to wear a kilt with pockets. I think hidden pockets would still permit the use of THCD as an overarching umbrella irrespective of construction. However, outright pockets like cargo pockets would be over the line in my opinion.

As to the poll, I try to carry as little as possible in any case, so only the bare necessities (yes, that includes a challenge coin) are usually with me and easily fit into my sporran.
Secondary option: Who has the highest ranking challenge coin wins. Certain offices/ranks have challenge coins which they give away. (PotUS, Secretaries of each military department, or the Sergeant Major of the (Army/Marines)/Chief Master Sergeant of the Air Force/Master Chief Petty Officer of the Navy/Coast Guard are examples of such.)