My profile says that I'm a Master Of. Unfortunately, they have a max length in place, or else it would say master of disguise. Armor games should really make sure that the "Sex" option is only male or female option...
He used a program to change the text on your profile and then took a screenshot of it. There isn't any hacking involved, he was the only one who saw it that way.
Master565 is indeed correct, I could easily change what your profile says with a firefox add-on like firebug and then take a screenshot. You just have to have a basic understanding of HTML. I could even modify the site in general, for example I could have a flame background, with an add-on like stylish and knowledge of css. It isn't technically hacking if it is done locally, and only you see it.
Anyhow this is a perfect example of why one should never underestimate the ban hammer
