Cullum also refers to the practice of inviting oneself to social gatherings, having assumed that hearing when and where an event is occuring constitutes a valid invitation.
Gosh darn that was a world class Cullum. There's no way someone could be that much of a mood killer and not be conscious of it.
Originates from annoying jazz pixie Jamie Cullum who is, himself, a cunt.
It is surprising how little explanation is required when directly substituting the word Cullum for cunt, lending itself to the theory that Cullum is one of the countries leading cunts.
He did what? What a fucking Cullum!
Yeah I know him, he is a Cullum of biblical proportion!