An expression used to rally the troops, create an energy, let people know you're up for anything; to establish an air of exitement and unpredictibility, and get all the fuckers motivated out of the house.
Before taking their neighbor for a joy ride, Frank said: "All right. Let's hit the fuckin' road. . . Let's go. . . . Now it's dark. . .
Let's fuck. . . I'll fuck anything that moves."