The act of getting absolutely and irrefutably filthy, dirty, sick, nasty, balls deep in complete and overwhelming scunionisity. Composed of sick + crazy + onion.
Pronounced : Scun - yun
Person 1 : "Hey you getting scunion tonight or what?"
Person 2 : "For sure, scunion betterrecognize."
Scunion was a term used by african americans meaning weed, pot, marijuana, etc... It was used around the mid to late eighties... That's what some called it when I was going to high school...