Skub
A fictional butter substitute created by the webcomic, The Perry Bible Fellowship. The comic features "Pro-Skub" and "Anti-Skub" characters fighting each other over their skub affiliation. It is not clear why skub incites such violence, and thus skub has become synonymous with shitstorms, flamewars and NERD RAGE over pointless things.
Skub isn't a butter substitute you faggot. It's more glorious than that.