Noun: Some one that peforms very poorly, ineffienctly, or lazily.
"Look how low Jessica's score is! Wow, she's a real suxxor!"
Verb: to kill, often used in violent online games such as Valve's Counter-Strike.
Exclamation: Victory is mine!
Verb: Murda that guy with the mac-10!
Exclamation: After killing five opponents, danksta repeatedly said "Murda" over the voice chat.