Freeze dried banana split
"Coldest ice cream in the world", the sign prominently proclaimed.
"How cold is it?", we asked.
"40 degrees below zero Celsius", the owner / barker exclaimed enthusiastically, "also the same temperature in Fahrenheit." He was very proud of this factual tidbit, which was somewhat upsetting as it's one of those minor factoids I tend to share whenever the opportunity arises, and to hear it bandied about in such a vulgar fashion made me worried that I was unknowingly imposing pre-existing or unwanted information on my peers. I comforted myself with the knowledge that I'd spent most of my formative years in a place where it regularly reached that temperature, and the memory of the first time I realized that given the starting and ending points on the oversized alchohol thermometer outside our house (this being before the takeover of those awful gaudy coiled bi-metallic strip powered pointing thermometers you see dotting suburban lawns and after the near-total demise of mercury thermometers for household use (besides which mercury freezes at slightly above the temperature of the soon to be talked about again ice cream, making it unsuitable for such climes) -- concurrent, nearly, with the rise of the two wired digital box (one for inside, one for outside), but we wouldn't obtain one of those for several years hence) there must be a crossover point within the scope of thermometer, and by meticulously tracing each path discovered much to my seven year old delight that it was at -40º, which has ever since seemed a quite ideal number.
The ice cream, by the by, was tasty but not exceptional. Cold, though. Darn cold.