Red, scattered irritation that manifests on the lower surface of one's bum; annoying itchiness typically occurs as a symptom. A condition that occurs from wearing a damp bathing suit (especially one with a mesh liner), for a prolonged period of time outside of water. A suggested solution would be to change out of wet bathing suit immediately after terminating water activities.
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.