Dirty Gnome

A person who is often maligned for being something that they are not, usually referred in the context of being filthy, scruffy, disorganised, with alleged underhand tactics.

Occasionally used in a competitive setting to express the pressure a person feels
Guy 1: An Archery Champion: “That Archer is a Dirty Gnome”

Used to explain why something unexplainable has happen to them
Guy 2 Xarett: It must have been down to the Dirty Gnome.

Often used by others to explain away their failings and incorrectly proportion blame
Guy 3 Dimitry: “I missed. It must have been because of the Dirty Gnome”

Used when you are not sure if the advice you received is helpful or designed to be off putting
Guy2: “Was that the Dirty Gnome's idea?