A fork of Rural Dictionary
Assbutter is the fluid, non-fecal secretion discharged from the rectum and spread in circumference of the anus. Usually caused by an extensive intake of alcoholic beverages and/or spicy foods, Assbutter can in extreme cases cause a seemingly insurmountable desire to itch.
After my last three-day party binge, I have a severe case of assbutter today. The itch is driving me absolutely crazy and I feel like cleaning my asshole with a Brillo pad.
an insult made up by Castiel from Supernatural TV series, the reason for the insult sounding weird was due to Castiel being an angel, and not being able to properly understand certain human culture as well as being a literal holy figure
it was first used in Season 5, Episode 22 when Castiel called Michael an assbutt before throwing a Molotov cocktail at him
Castiel: Hey, Assbutt! *throws a molotov cocktail at Michael*
Dean: Assbut?