the best way to get the right answer on the internet is not to ask a question; it's to post the wrong answer." The concept is named after Ward Cunningham
Person 1: hey bro the awnser for question number 6 is b.
Person 2: No its not! Its A.
Person 1: thank you, Cunningham's law strikes once more!.
ACS Law is (soon to be 'was') a law firm specialising in indiscriminately sending threatening emails to people they believe to be illegal file sharers. Although their most noted case prior to 2009 was the defence of a British national accused of public indecency in Dubai, they are better known for noobing up their security and having their internal emails leaked.
Your partner slept around after finding out you'd been unfaithful? That's ACS Law, baby.
LaCroix's Law states that as an internet discussion evolves, eventually someone that disagrees with a person will imply that the person watches Fox News and is therefore a moron. This person believes invoking LaCroix's Law "wins" the debate. (see Godwin's Law for a similar adage).
the internet poster Teabagger just invoked LaCroix's Law by posting that internet poster Joe SixPack is a moron and therefore must watch Fox News.