Milk does not go bad a week after opening. Eggs don't spoil after two to four weeks in the fridge. A bag of bacon in the freezer isn't going to end you because it sat there for three months. Fruit juice doesn't go bad in 3 days. Butter doesn't go bad after two weeks at room temperate, let alone in a fridge.
The other element is how the item is handled. Traditional bacon stored in brine can last for months in most conditions however I would not attempt to store opened bacon for more than a week or so. Likewise if you have raw meat, it is all about what it has been exposed to that can make it dangerous. Cooked meat, if uncontaminated and cooked through can last for quiet a while and still be safe. Once contaminated it can become dangerous quiet quickly.
Commercially bought eggs in the US need to be refrigerated because they remove the outer antibiotic coating before sending them to stores.
The coating is oil from the chicken, and they wash it and replace it with mineral oil, which works just as well.
I speak from experience: I have not refrigerated US bought eggs for around 10 years. Not a single problem.
If you keep them un-refrigerated for more than 2 months (which I did because there was a really good deal, so I bought a lot), the eggs are not fresh, the yolk falls apart easily. (So not great in certain recipes.)
However they are not spoiled or anything like that, and the taste is unchanged.
Of course, 3 months is plenty for the present discussion.