In many cultures, milk symbolizes 'purity,' 'the basics,' and 'nutrition.' Therefore, this emoji is sometimes used to represent something fundamental or a simple and healthy lifestyle.

In Korea, it's said that drinking milk with spicy food helps reduce the heat. So, when doing a spicy food challenge, people might send this emoji to playfully express their confidence, as if to say, 'I'm ready!' In the West, it gained an even more familiar image thanks to the famous 'Got Milk?' campaign.