When you are doing work, whether it be for school or for a job, and simultaneously watching/listening to porn on your second monitor (but not jerking off).
Mom: Joey are you… workin and twerkin???
Joey: No mom it’s was a virus!!
Vigorously moving your bottom in a quick organized motion. Usually up and down. When advanced one muscle at a time. Mostly performed by African American Women, and Miley Cyrus. Also performed by Caucasians women usually involving popping of the chest, movements of the legs, and jerking of the neck. Enjoyed by both genders and all races