The answer....

Clearly, I am sadly lacking sophisticates in my circle of blip-friends! :-)

In the 1930's if you offered to mix a cocktail for your date, you could with one debonair movement withdraw this from your top pocket, slide the slide, and you have a swizzle stick! Silver at that. What girl could resist?

Obviously Waddie the Printers gave this as Christmas gifts to their more prestigious customers.