Thrown under the bus. Merriam-Webster defines it as “to criticize, blame, or punish (someone in a vulnerable position) especially in order to avoid blame or gain an advantage.” It became enormously popular during the 2008 presidential campaign, when the linguist Geoff Nunberg, on NPR, counted it in more than 400 campaign stories in six months.
Got your six. Service members say it to tell each other that their rear is covered. Picture an analog clock with you at the center, facing 12. Six is directly behind you.