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
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Multiple arseholes behaving like arseholes all at the same time.
โSay Bob, you sure seem to have a bee in your bonnet about something.โ
โWell, Mavis, itโs all this arseholery thatโs going around the office.โ
โIs it Calvert?โ
โAnd Gertrude. The arseholery is tit-deep in there!โ
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