The tendency to get sick of an extended game or movie marathon faster than you would if you were actually doing something for its regular duration.
Most often seen when someone suggests you play a 50 turn game of Mario Party, or all the tracks in a racing game, or watch all the extended versions of the LOTR.
In 2012 in Indiana Republican Senator Richard Lugar was a popular incumbant who would have been easily re-elected, but he was defeated in the Republican primary by Tea Party candidate Richard Mourdock, so then in a Tea Party turnover the Senate seat went to Democrat Joe Donnelly.