I randomly watched the Penn and Teller Bullshit episode about violent video games. I never noticed this in the beginning, but in the bottom left corner there is a bunch of text chat scrolling by, including:

PRICEMSTR: WTB epics PST
ROGUEN: LF39M MC
PENN: Alright, let’s do this!
PENN: PENNNNNNNNNNNNNNN
PENN: JENKINS!
ROGUEN: DPS LFG
PENN: BOOM HEADSHOT!
and a bunch of people saying REPORTED

I can’t believe someone would put LF39M MC. That is some old school stuff.