What about "Frosty"... one of the things I have loved the most about the screwball in the ability to use really low temperatures in comparison to most of the devices I have. It made the screwball the choice of device for me when recovering from surgery purely because I had ZERO risk of combustion and the vapour is tasty and cool and that comes from the gem cut rubies...
So what about "Rudy Frost", "Rudy Chill", "Frosty", "Rimy", "Crispy", "Crystal Frost", "Vapor Gleam", "Vapoura", "Rudy Breeze"