When used in an argument, a person takes various scraps of talking points and tosses them together into a bowl, then tries to pass the word salad as a cogent argument.
In discussing the Boston Bombings and the Republican Congressmen who should understand the Constitution as pertains to the rights of American citizens, a commenter referred to the president as "Obummer" and said that the article about Republican Congressmen should have been entitled "Obama doesn't understand the Constitution" because the borders are not secure and Mexican drug cartels get guns. The comment has nothing to do with the article and can be dismissed as argumentum ad saladbar.