you're
The word that people use to correct people who don't know the difference between "your" and "you're". Sometimes when people have an argument on the internet, they correct people's grammar. So in desperate need to look smarter, some people try to correct the person they're arguing with by typing *you're, even though they used the correct "your". So they end up looking like an idiot. which they probably are.
John: Your stupid
Ben: *you're
John: *dies*

or
Bob: Your profile picture is anime
Jason: *you're
Bob: No, it's "your". Think about it, what does "You are profile picture is anime" mean?
Jason: *deletes account*