Ok, really this is just for @mike_ftw to read.

No, I'm not saying he time travelled. No, I'm not saying he's intentionally pretending to be a brand (he's clearly not). The guy just got lucky.

I'm saying Quikster *can't* buy the handle, even if they wanted to, it's a violation of Twitter's policies.

However, if you have the twitter handle of a brand, and attempt in any way to imitate them that is also a violation of policy, and if you attempt to sell said account, same thing. I'm guessing this guy doesn't know that, and once he realizes his newfound fame, he'll try both.

At that point, some Twitter admin will swoop in, and declare him in violation of policy and suspend his account. Then, they'll just transfer it over to the "real" Quikster, and homeboy will have to get a new Twitter account.

And I really don't think it's illegal to post pictures of Harry Potter. I think we can fair use that stuff.

Thanks to @_Everaldo, I learned that the new Twitter for Mac does, in fact, have a "secret" alternate icon in the Resources folder.

If you would like to switch to this secondary icon you will need to go to quit Twitter.app > Remove Twitter from the Dock > Go to your Applications Directory > Right-click (Option + Select) the Twitter app and select Show Package Contents.

Navigate to Contents > Resources. In this directory, you will find files called "Icon.icns" and "Icon_2.icns".

Drag both these files out to your desktop and delete the originals. Rename "Icon.icns" to "Icon_x.icns" or whatever you want, then rename "Icon_2.icns" to "Icon.icns". Drag the newly renamed alternate icon back into the Resources folder and enter your computer's Password when prompted.

Go to the Force Quit menu (found in the  drop-down in the Menubar) and Relaunch Finder. Relaunch Twitter.app. Your new icon should be the alternate icon. 

I would recommend keeping the original in case you ever want to switch back.

Update: Found another alternate icon for Twitter for Mac on Dribbble.

Also, here's another really sweet little hidden feature of Twitter for Mac!