So, emojis on iOS vs. Android look ever so slightly different. You knew that, right?
Take, for example, the dog emoji:

Social media and messaging apps also do their own versions. Here's what the dog looks like on popular apps:

An astute Twitter user noticed something very interesting about the differences with the hamburger emoji:
I think we need to have a discussion about how Google's burger emoji is placing the cheese underneath the burger, w… https://t.co/A6NR5aOjQT
Let's look a little closer. Here's the Apple/iPhone hamburger:

And here's the Google/Android:

Note the placement of the cheese (on top of burger) on the Apple/iPhone:

And here is the Google/Android — with cheese UNDER the burger:

Sundar Pichai, the CEO of Google, has addressed this, tweeting that the company will "drop everything" to fix it — if we can all agree where the cheese is supposed to go:
Will drop everything else we are doing and address on Monday:) if folks can agree on the correct way to do this! https://t.co/dXRuZnX1Ag