I see 2 possible explanations:

1. The one in the chat is not him, but I'm assuming uses the correct spelling for the username that our little friend signed up for, seeing as how he can't spell worth shit.

2. He's probably using bad grammar on purpose for some twisted little noob reason. You never know, he did pretend he's a girl to hide his identity. So he's probably doing that as well for the same reason.