sellsius
A unit of temperature-measurement that rates how "hot" or "chilly" a salesperson's looks and/or mannerisms are when marketing his wares.
Billy Mays may have fancied himself as "just the ultimate salesperson stud", but I never thought much of his puffed-up yatter, and so I'd have given him a merely "lukewarm" rating of about 15 degrees on the sellsius scale!