DUDE!!! That's the understatement of the century.
Photo film, is a chemical, a type of gummy liquid if you will (not 100% accurate but bear with me)...
Now....chemical reactions are extremely temperature dependent...which is why if you raise the temperature of your developer by as little as 7 or 8 degrees you can reduce development time by half or more.
or if you drop it by only 6 or 7 degrees you can triple it.
The moral of the story? If you keep bricks of film in the dark and in a deep freezer, they will still be quite healthy long after you are dead and in the ground. That's true whether you are 16 or 60 today.
It's pointless, but if you kept it in a -70 D. Celcius lab freezer (neg 94 F), and wrapped in lead foil, I wouldn't be suprised if it lasted 2000 years or more.
Keeping it on a shelf in the tropics can kill film in as little as 4 months I hear, so you are best to bring your own film if you travel.
The problem with buying expired film that has "always been kept refridgerated", is that business is business, and vendors lie.