When and why did hams start saying "stroke", as in "portable" or "mobile?" I operated a special op station last year when it became 100 years old and the ID was [station call] "stroke" 100. And a couple of weeks ago in the mobile someone called W1GUH stroke mobile. Felt like telling him to keep his strokes to himself.

WTF? How come all the stroking? If I want a "stroke", I will definately NOT be on the radio!!!! Maybe the internet, but then, the internet uses the proper term, "slash", forward or backward.