Skub
Skub is a fictional substance of unclear purpose created by webcomic The Perry Bible Fellowship. The comic features "Pro-Skub" and "Anti-Skub" characters fighting each other over their skub affiliation. It is never explained why skub incites such violence, and thus skub has become synonymous with things that cause unnecessary rage and difference of opinion for mundane very important things; for instance, Warhammer 40,000 and WARMACHINE are often referred to as Skubhammer and Skubmachine.
Skub is so great the tyranids came to this galaxy to harness its power. it is one of the most controversial substances in existence, people either hate it to the point of wanting to violently murder anyone who think other wise (anti-skub) or zealously worship it as a holy ambrosia gift from our glorius Spiritual-liege .