The no comply is a skateboard move that was popularized by the skater Neil Blender in the 1980s. To do the trick, you must plant your front foot and pop the board with only your back foot.
This trick is usually done on flat ground. It was Originally debuted In Thrasher magazine 1988 as a curb or parking block trick where the front foot is planted first on the curb and the back foot "bonks" the back truck off the curb/parking block bouncing the board up and off- landing back on riding away.
A variation of this trick is performed by stepping off the board with your front foot, and popping the tail up off the ground while turning your body either frontside or backside 180 degrees, returning your front foot to the board once you've rotated. On the east coast, this is known as a "43",some say its derived from "DC" the numbers in the order of the alphanumeric alphabet.the number "43"is also seen in legendary skateboard film "Sick Boys" circa 1988 where it is written in spray paint on a pick up truck parked in front of a San Francisco skate shop.
The 43 which is a slight variation of a no-comply. The 43 can be combined with other tricks; for instance, a 43-shifty, where the board is swung back around 180 degrees with the back foot, following the original 180 degree pivot.
There is a skate shop in Austin, TX named after the trick.