An Internet Badass is similar to the Internet Gangsta.
They are someone who uses the internet so they can appear tough, they are often seen getting in pointless Nerd Wars, they tend to threaten somebody with physical violence, saying things like "I'll kick your ass!" When in reality, they are the kid in your class that sits at their desk quietly and reads Naruto comics.
The sad thing is, this is the only life for some people, they can't pull it off in reality, so they think they can get some "Internet Respect" by cussing at people on Myspace, Youtube comments, or a forum, they think by doing this, people think of them as a Badass.
internet badass: ur just lucky i can't get to you!