1) Crocodile tears
Uncle Herman had crocodile tears at his father's funeral to get sympathy from the Inheritance lawyers
Mrs. Brown shed crocodile tears when the pet cat, she hated, died
Rose shed crocodile tears when she her rival for valedictorian quit school to have surgery on her appendix
Definition: False display of emotion
Etymology: The myth dates back as far as the 14th century and comes from a book called "The Travels of Sir John Mandeville." Wildly popular upon its release, the story recounts a brave knight's adventures during his supposed travels through Asia. One story says "These serpents slays men, and eats them weeping, and they have no tongue." While factually inaccurate, Mandeville's account of weeping reptiles later found its way into the works of Shakespeare, and "crocodile tears" became an idiom as early as the 16th century.
2) Shot in the dark
Matthew's guess of what the capital of Nigeria is was a shot in the dark
The quiz show contestant risked making a shot in the dark for the million dollar question
Scott's estimate of the dinner bill was a shot in the dark
Definition: total guess
Etymology: Shooting a gun in the dark
3) Doe-eyed
Taylor could make her boyfriend buy her anything she wanted by giving him a doe-eyed look
The doe-eyed first year students could not forsee the challenges ahead in the coming year
Hunger Games is about a doe-eyed teenage girl who needs to survive in an arena of death
Definition: Innocent
Etymology: Female deer