To be an ubar 1337 programmer. This person can gain access to virtually anything involving a computer. It may be done for pleasure and harmless jokes, or it may destroy other computers. These people are usually huge nerds.
Erich: Wow Marty, I am such a h4xor. I just shut down MIT's power.
Marty: That's totally awesome. You're ubar 1337.
Marsh: Man, I wish I wasn't such a noob and could be a h4xor too.
in early 2008 i realized i used the word "hardcore" alot in text/instant message/conversations and it started to annoy me. so basically i changed it to hxcore. means the same with less letters and looks cooler...and now its a word. yay for me.