[get-out] 
| 1. | Commerce. the break-even point. |
| 2. | Chiefly British. a method or maneuver used to escape a difficult or embarrassing situation; cop-out: The scoundrel has used that get-out once too often. |
| 3. | as all get-out, Informal. in the extreme; to the utmost degree: Once his mind is made up, he can be stubborn as all get-out. |
as all getout
To the ultimate degree, as in She made him furious as all getout. The American writer Joseph C. Neal had it in his Character Sketches (1838): "We look as elegant and as beautiful as get out." Today it always includes all. [Colloquial; first half of 1800s]