Have you ever opened the fridge, taken out an egg, cracked it into a pan, and found a suspiciously liquid, foul-smelling substance oozing out? There's nothing worse than planning a delicious breakfast, only to discover that your eggs are spoiled. Eggs are a delicate food, and their freshness fades over time - but how do you know if they're still safe to eat? Luckily, there's a quick and easy trick that lets you check their quality in seconds without even cracking them open.