What is Mathum?
1.
A name you give to someone for comitting plagiarism excessively and posting other peoples songs or videos on their blog without giving the original artists credit.
Person 1: "I downloaded that song I showed you the other day and posted it on my Newgrounds profile without giving the artists credit!"
Person 2: "Wow, you're a bit of a Mathum aren't you?"
See
Random Words:
1.
boasting about being leet, someone who pwns noobs.
Noob: omg wtf you hacker!
Totally Awesome kid: ur just jealous i'm trancefistd..