Stands for Hang, Bang, and Danky Kang. An alternative way to ask someone to hang out. Usually implies you'll be either hanging, banging, or playing video games/smoking weed (whichever tickles your pickle).
"Hey bro, lets hbdk tomorrow morning!"
"Not sure if I want to smoke the danky right before work, but I'll take you on in the kong!"
"Not sure if I want to smoke the danky right before work, but I'll take you on in the kong!"
by Nynecho June 3, 2016