A woman (or man!) makes herself 'available' to one or two men from a group friends and all they other men find out and also manage to nail her, repeatedly, taking her total of your group into double figures.
' That girl you went home with the other night you do know she has slept with a couple of your mates?', 'Yeah I do she is the football teams SpunkDump!'
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.