Yardle is difficult to describe, as it encompasses many facets of life. To some it is a way of life, yet to others it is simply a strange word.
In its common form, it refers to a general fuckup, as in "pulling a yardle". However, it can also refer to a general attitude of not caring too much about small problems. Sometimes, it lacks any meaning at all.
Brought to public attention by Bob Woodward and Carl Bernstein in the book on the fall of Richard Nixon, All The President’s Men, ratfucker was Nixon’s term for a political operative who sows chaos among opponents; an agent provocateur. It is thought to have originated among campus political rivalries at USC, and seems to have some usage in the US military.
Along with Nixon’s other ratfuckers, Roger Stone caused fights at otherwise peaceful Democratic Party protests to generate a false narrative that the Democrats were violent and dangerous.