It started out with this XKCD cartoon: http://xkcd.com/467/ , specifically the titletext. We were talking about how computers are ready-built to offend the evangelical loonies, and I made the joke 2CPUs1Board in reference to dual-core computing (in retrospect, it probably should have been 2Cores1Chip or something, but come on- it was 8:30 AM in the middle of German class) and the 2Girls1Cup thing
Kevin in turn drew a table like the one in the comic, except with CPUs and motherboards.
I then referenced the titletext by saying 2CPUs4+3iBoards (which actually should have been 2CPUs(5+3i)Boards)- the joke is the same as in the comic, namely that (4+3i) is a complex number, in other words 4+3√(-1). As such, it does not actually exist outside of mathematics, and it is impossible to actually have (4+3i) of something- a (4+3i)-core processor would have four regular cores, and then three cores that only exist in the complex plane.
Not funny, boring, and really nerdy 
which I actually don't understand pretty much anything of other than that it is probably porn and it's mentioned a lot in XKCD)
Banned for not knowing what the known viral video "2 Girls 1 Cup" is about.
I was only able to watch only a couple of minutes of that vid, as it is by far the most disgusting and sick thing I've ever seen.
Yes, it can be considered porn, for some people, but mainly it involves a lot of scatophilia/coprophilia.
I'd like to refrain from describing what takes place in that video, for obvious reasons.
"Your hands are slow, your movements sluggish, your lack of speed, just brings you anguish. Just take a sip, you will move faster. Just try it now! And speed is mastered!"