When you are about to have sex with your girlfriend, when out of nowhere Clint Eastwood walks in and has his way with your chick. After he is done he gets up, dusts off his pants, and leaves while giving you a charming wink.
DUDE! I got the Coogans Bluffpulled on me last night. It wasn't cool.
Irish history written from an Irish Republican perspective, i.e. in the style of the Irish historian and journalist, Tim Pat Coogan.
Historians often write from a particular perspective ; Cooganism is Irishhistory written from an Irish Republican perspective, as is typical of the writings of Tim Pat Coogan.