Abstract: A building block assembly includes a block that has a top side, a bottom side, a first lateral side, a second lateral side, a front side and a back side. The block has a plurality of apertures therein extending into the top side and outwardly from the bottom side. Each of the apertures is defined by a perimeter wall. The perimeter walls of each of the apertures is cylindrically shaped and has threading grooves therein. The apertures are aligned with each other along a line orientated perpendicular to the front side and are equally spaced from the first and second lateral sides.