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Modeling rule
(www.smbc-comics.com)
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
How did you make username do that?
A display name can, apparently, contain any (or perhaps just most) legal unicode character. That includes emoji, so presumably my display name could be ๐ if I wanted.
You can use a fancy text generator on Google and change yours on the website settings by modifying your display name.