Using words and terminology that only geeks would understand. Generally refers to 1337/hax0r computer slang used by gamers, but also includes other exceptionally nerdy things like star trek, magic, DDR or LOTR.
1.(1337/hax0r) 1f u c4n r34d th1s u r3411y n33d t0 g37 l41d
2. So when we we playing DDR Kyle shouted "Qu'vatlh guy'cha b'aka!" and I'm like, hello, you can't shout Klingon curses during a DDR game!