A Soul Dragon is a emo woman who is controlled by your worst fears, Also the emo may also think that it has a tail to. Also it is bitch girl who keeps asking for things, or a bitchy lesbian who seems psycho. It can also be used and the same meaning and "pwned" or "owned"
ME:ohh! did you just hit me.
Soul Dragon:Yes I just hit you with my evil tail. AAAAHHH!!!
ME:OMG Im Melting!!
ME: I just lost the game
Friend: Yea Man we just Soul dragoned your ass