The word often used to refer to the monstrously huge metal bumpers found on the BMW E30 3-series from 84-87. The e30s of the year 1988 also came with d-boards however they were slightly shorter and the plastic bumpers from the 89+ e30s fit without any modification.
If you have an older e30 the plastic bumper swap is not so easy and requires some alteration to fit but nonetheless can look stunning.
D-boards can also be tucked and/or painted. The tucking method involves the owner drilling the bumper shocks and compressing them to make the bumper shorter. Painting the d-boards is also a nice touch and prevents them from making small children cry during the daytime.
"There is a family having dinner on your diving boards."
"Put your sun-glasses on, honey. There's a mean set of boards up the road."
When one partner paints them self in blue and lies on a board of nails with an X formation, formed by their arms and legs and then places a pipe with a circumference of 5cm above their entry point. Then the other starts by continuously jumping up and down on a diving board to gain height once enough height is gained, the personwill then superman with their penis head facing the pipe into the first partner's entry point. Once completed, the room should be full of red (blood, from the pipe, which is too small to fit the girth of an average male penis), blue (paint, from the woman receiving a dripping blood penis) and white(semen or if done with caucasian people). With all these colors you've now decorated the room with a Norwegian flag.
Guy: Hey want to perform the Norwegian Nailboard Pipe Job Super-X-man Diving Board Formation.