Ok, so I just plugged up my small fridge in the garage a couple weeks ago. It didn't get below freezing much (if any) when I first plugged it up and the beers I put in there tasted fine. This week, however, (as the whole east coast will agree) it got cold as a witch's tit, probably below the fridge's temp. When I popped the top on the brews I heard no "fssss" sound and they were pretty flat. The turbo cold temps might have something to do with it but I wanted to know if anyone else has had this problem. Did the liquid expand and the glass shrink (thus breaking a "seal")? I'm fairly new to craft beers so don't judge me too much! Also you Minnesotan's try not to hit me with your -40 degree weather up there either! 0 degrees is cold for us down here!! It pisses me off because I had an Ola Dubh 12 AND 16 in there as well as Racer X among several others. Thanks dudes and dudettes.
The most logical answer is that the colder the beer is, the better the CO2 stays in suspension, thus less of a hiss when the cap is removed.
Quite possibly the case, as big beers can get quite cold before freezing. (Though technically the CO2 (most of it) is in solution rather than suspension.)