The extent to which one is an arsehole. A quantity of arsehole-ness, i.e. having or being of greater arseholery simply means that the subject is more of an arsehole.
"Alternatively, you can get yourself a wedding planner, which is the wedding equivelant of debt consolidation. Rather than dealing with various different arseholes of varying levels of arseholery, you can get yourself one 18-carat, stone cold wanker." - Ed Byrne
A person who usually without any effort is naturally gifted in excelling at the disruption of almost every situation they are involved in directly or indirectly. Arseholians also are naturally obnoxious , arrogant and non compliant to any reasonable solutions that mayhelp them or their situation and thrive on creating problems so they have something to whinge about.
I told him not to put that on Facebook . Now he's been arrested and lost his job at the morgue. He's such an arseholian
The bits of animals that they couldn't sell as real meat, which subsequently end up in other products which claim to contain meat (although no one can actually tell you what kind of meat they're supposed to be), e.g. doner kebabs, hot dogs, McNuggets, etc.
Dude 1 - "I don't believe you're eating that Doner. You know what those things are made of?"