Several counts of fail

#1 If your mother has the habit of buying foodstuff and leaving items half-eaten in the fridge, keep this in mind the next time you look for a braising liquid and go to take a swig of the milk to see if it's still "good".

#2 You have a nose that detects smells. Bad smells usually indicate a food item should not be eaten. A milk carton should never smell like yogurt.

#3 Milk is a liquid. Liquids flow easily. You should not have to jiggle a milk carton to take a swig of the milk inside to see if it's still "good".

Milk gone bad. Found on No Cow Juice, No Problem.