Are you kidding me?

 THIS ONE is amazing

Milk Jug

Ever wondered what the dent on a milk jug is for? Most people might not have heard of this one, this is perhaps the most useful tip of them all. The dent on a milk jug has two purposes. The first is that it absorbs any shock if and when the jug gets dropped.

Milk Jug

The other is to expand outward when there is excess gas in the jug, thus letting the consumer know when the milk has spoiled. Isn’t that neat?