Antisippation
This is the feeling of both dread and desire as one braces for the scalding hot beverage you're about to drink or sip from (usually, but not limited to) a hot "to go" cup. Your drink of choice is awaiting to be consumed -- but has been brewed and poured into a vessel that maintains its 387ºF (196ºC; 470ºK) temperature...so, it's CERTAINLY going to take at least 5 layers of skin off of your tongue and the roof of your mouth, as well as melt every amalgam filling you've ever had. It will certainly strip the first two layers of dentin from every tooth.... but... you simply can't resist. You MUST. Drink. This. NOW! Ever-so-carefully....
This (coffee/tea/etc) smells SO good! I better be careful though; they just poured it. I'm feeling overwhelming antisippation.