Emoji meanings drift with usage, not design
Emoji are designed to depict a specific image, but their actual meaning in conversation is set by how people use them over time, similar to slang. That is why an emoji's common meaning can end up quite far from what it literally depicts.
Rendering differs across platforms
The same emoji code can look noticeably different on different phones and apps, since each platform designs its own artwork for it. A face that looks mischievous on one platform might look neutral on another, which is part of why tone can be misread between people using different devices.
Frequently Asked Questions
Do emoji mean the same thing to everyone?
No — interpretation varies by age group, culture, and platform. A meaning that feels obvious to one generation or community can be read completely differently, or even oppositely, by another.
Why do younger and older texters seem to use different emoji for the same feeling?
Emoji usage shifts over time the same way slang does, so an emoji that meant one thing to an earlier generation of users (like the crying-laughing face for something funny) can be seen as dated once a newer emoji (like the skull) becomes the trend for the same feeling.