Many people know of Godwin's Primary Law; as an arguement becomes more heated, the likely-hood of references to Nazi's and/or Hitler increases. His secondary law is that; as the likely-hood of Nazi's and/or Hitler being mentioned in a thread, in direct reference to his Primary law, increases, so to must the chances of his own law being referred to. This will usually have little effect on the actual thread and will merely result in minor lulz.
Newfag: goddamn Nazi everyone knows Fullmetalalchemist is the most awesome anime EVAR!"111!!!!
4channer1: Lol Godwin's law, you lose.
4channer2: lol Godwin's Second law.