Edited: Nevermind, figured it out.
I know, right?
One thread some guy freaks out because a random girl is having sex with another guy - you as the player don't even physically meet the girl, it's over the phone for pity sake - and calls everyone a bunch of 'cucks' because they don't agree with him (I called him an idiot). And then in another thread some guy freaks out because all the girls aren't being raped by black men (or whatever it is that they want... I never did get the entire "want someone else to have sex with my girlfriend while they both insult me" thing).
People don't even seem to know what the heck it means, but they get really annoying over it.