Template:USERNAME/doc

Adds the username of the registered user viewing the page into the page, so that with the sentences:
 * You sucks. AU 's AU sucks too.

The user reading will always see an insult directed toward them and their AU, no matter who they are.

'Use this template sparingly. Misuse of it (including, but not limited to, adding " is gay " to pages) may result in a ban.'

How to disable this template
Go to Special:MyPage/common.js, and add the following line at the top, and then refresh your browser - var disableUsernameReplace = true;