An idiom playing on the acronym D.D. / Due Dilligence. DDbD stands for Due Dilligence be Damned which portrays an investment strategybased onimpulse rather than research.
In reference to stocks n shitz, and I quote : “Right here, Had to suck some dick behind dumpster so I can buy more ANVS” - Zig. We would refer to him as “ DWNBD”
When a student is so bored he (or she, but I'm writing this so ya) goes on the urbandictionary.com and searches up some things, then find out that defining things is a thing, so he types this out and then defines it because he was supposed todo something for math.