Costco has reportedly been forced to recall 80,000 pounds of butter after the nutrient label failed to mention that the dairy product contains ... milk.

Costco recalled 80,000 pounds of butter whose packaging omitted the allergen warning 'Contains Milk.' It follows a far worse packaging error from Mattel last week.

Costco's latest recall, which includes some 80,000 pounds of butter, has given the internet a reason to mock the beloved warehouse giant. Here is everything you need to know.