possible ignition wires/coil, mass airflow, or torque converter clutch failure.
Broken sway bar or sway bar links.
The rhythm probably calms them.
Skittles!!
Back in Black by AC DC
possibly your tires or a wheel bearing, listen at lower speeds, if you rock the steering wheel back and forth and it comes and goes it's probably a wheel bearing
Rocking back and forth when crying is a self-soothing mechanism that can help regulate emotions by providing a sense of comfort and security. The rhythmic movement can help release tension and calm the nervous system during moments of distress.
because that baby could go to sleep
There is nothing to it! Just sit on it and rock back and forth!
The grinding noise you hear are your shocks and struts. If you experience bouncy while you are driving, as well, you should have them changed.
Rock
To remove a seized speed sensor, pry it loose with a thin screwdriver and gently rock it back and forth while pulling with steady pressure.
A tear-drop shaped piece of feces which dangles from the rectum while defecating. To knock it off you must rock back and forth and from cheek to cheek to dislodge it from your sphincter.