
thus it would freeze first round the outer surface leaving the inner core temp that bit higher for a short while, thus keeping it liquid.
so when the can expands due to the freezing, and ultimately ruptures, there's still enough umpf behind it for a lager shower inside.
sounds like a brainiac experiment waiting to happen.
go on, try it!
footnote: swmbo (absolutely not me!) left a bottle of something pink and winey in the freezer a friend had brought round warm for them to sup, intending for only a quick chill so they could drink it later. suffice to say after a couple of glasses, she forgot, and we had zinfanfdel flavour peas and sweetcorn for a few days afterwards!