The Nobody post from a few days ago spawned some interesting wikipedia findings with regard to the history of locking.
The beginning of Locking can be traced to one man, Don Campbell. In the late 1960s he put together several fad dances adding moves of his own (notably the "Lock") when performing.
The original lock was created by accident: Don Campbell couldn't do a move called the Funky Chicken and stopped at a particular point. He wasn't able to perform it fluently, for he couldn't remember which step to take next. (Even the acting towards the audience was of spontaneous nature: people started laughing at Don because of his unfamiliar moves, whereas he started pointing at them.) These halts soon became popular as Don added them into his performances.
The resulting dance was called Campbellocking, which was later shortened to Locking.
In the early 1970s this set off a movement of Locking dance groups. The most notable was when Campbell formed the dance group The Lockers [T15 note: this is the group in the commercial] and set the foundation for locking dance and clothes style.
Now you know what it is, here is how you doooooz it...
Alpha/applejax/Oilwells --One leg is kicked forward from a crouching position while the upper body is lent backwards supported by both hands.
Bop-top --a bop top is where you make a 70s face step with it and some hand gesture
Box split --A semi-split done with one leg bent, which enables the dancer to get up again in one swift movement.
Crazy horse or Whichaway --Altering kicks to the sides with right and left legs, upper body stationary with arms in front as if holding reins .
Funky Broadway --Moving the feet from a 'V' position to an upside-down 'V' position, while moving to the side. The body generally lags behind.
Funky Chicken --Feet move from side to side with small kicks each way, while moving the body up and down. (This is different from the James Brown Funky Chicken.)
Groove Walk or Rock-Steady or The Bump ---Stepping forward, the hip of your front foot is thrusted towards the front foot, brought back, dipped forward towards the front foot as you take a step with your back foot (sometimes used to get across the dance floor with some funk in your step)
Hop kick --A high, quick kick of one leg while standing straight on the other.
Knee Drop -- Drop to the knees with knees pointing inwards (into a W shape leg position).
Leo Walk --A funky two step where the first is an exaggerated step in a particular direction, followed by sliding of the second foot along the floor to meet the first
Lock --Bending slightly forward with arms forming a circle downward, as if lifting a heavy object.
Pacing --A quick punch to the side, with hand starting just below the shoulder. (Fist should still be open.)
Stomp the cockroach --Going down on one knee, with the other leg pointing out to the side, then pounding the floor.
Scooby doo --Taking a stationary forward step, then making a Lock
Scooby walk --Walking forward, stopping and bending knees outward with each step
Scootbot or scoobop --Skipping while making the motion of an exaggerated step to the left or right.
The Skeeter Rabbit-- a kick and shiffle hop move
Stop-and-go/Busstop--Taking a step back and to the left/right, then forward again.
Uncle Sam points --A quick, extended pointing gesture, usually held for a few seconds for emphasis
Wrist roll or Twirl --Twirling wrists while moving arms up and down in pace.