The length of time that the air conditioning you've absorbed will last until you reach the next air conditioned building/subway/apartment.
I hope I have enough coldover from my office building to make it to the subway before I start sweating like a pig in this 100 degree heat.
A shot of the finest available liquor dropped into the cheapest available beer.
"Barkeep! A hobo boilermaker, if you please: Jonnie Walker Blue dropped into Natty Light!"