“Skunked” gets used for almost any beer that tastes wrong. It actually points to a particular light-related fault. A warm can, an old IPA and a bottle left in direct sun may all disappoint, but they are not automatically the same problem.
Light: what the package can prevent
Ninkasi Brewing explains that a can blocks light from reaching the beer. Bottles do not provide the same complete barrier, and brown glass offers better protection than green or clear glass. Light can produce the characteristic skunky aroma known as lightstruck beer.
That is a useful distinction when choosing packaging for an outdoor gathering. A can protects the beer while it stays inside the can; pour it into a clear glass in direct sunlight and the package is no longer doing that job. Keep the drink shaded, too. A cold bottle in full sun is still exposed to light.
Heat: a can is not a refrigerator
Protection from light does not protect beer from a hot car. The Brewers Association recommends refrigerated storage to preserve freshness, flavor and aroma. Plan the cold part of your shopping trip accordingly: cooler ready, beer purchased near the end of the route, refrigerator space available at home.
Buying beer cold is convenient, but it does not make the previous handling irrelevant. Nor does cooling a warm beer necessarily reverse changes that have already occurred. Think of refrigeration as preserving what you bought, not resetting its history.
For a Vegas errand run, the practical choice is often packaging you can keep shaded and cold. Put the purchase away before setting up the food or unloading the rest of the car. Avoid leaving extra packs beside the serving table just because the first ones are already in the cooler.
Age: learn which date you are reading
A packaging date, a best-before date and a production code tell you different things. Read the wording around the number. If it is only a code, use the brewer’s guidance rather than assuming it means the beer expires on that date.
Two packages carrying the same brand name can still be different beers, sizes or strengths. Check the full beer name, the package count, the volume and the ABV. An IPA, lager and stout are broad starting categories, not promises about one particular bottle’s bitterness or strength.
Here is a label comparison worth doing: at the same serving volume, a beer labeled 6% ABV contains one-third more alcohol than one labeled 4.5% ABV. That is simple arithmetic, not a recommendation to choose the stronger option. It is a reason to pay attention when changing brands or formats.
Browse the beer selection by the actual product and format. Then protect the purchase on the trip home. The cooler, the shade and the package date each answer a different question.