Usage: ME <text>
This will preface any text with your nickname and in most cases use a different color for the message than a normal text color.
It is used to distinguish actions from speech. For instance, if your nick was 'John' and you typed "/action is going to watch TV" it would show up emphasized as "John is going to watch TV".
/me is hungry
Note: This command is an alias of the command ACTION, which usually is used less.
This is also a client-side command, so your client may not support it