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1.
A slang term for the anabolic steroid "Duribol," which is usually injected in the buttocks.
"Come on now. He's gained 15 pounds and is freaking out on everyone. He's riding the d-ball train for sure."
by Funthrax April 27, 2007
 
2.
Noun referring to someone who does bush or dirty things, or has poor hygiene habits
wow that kopy kid is really a dball
by Brent Lockwood August 03, 2007
 
3.
To fall, faulter, crash, topple or any other non-stellar action resulting in the breaking of ones neck without having permanent dissability, and hence: still able to be laughed at after the incident.
"Dude, be carefull on top of that scaffold. Your gunna fuckin slip and D-Ball on your head.;
by Assmoothaseggs December 26, 2009
 
4.
Another way to call someone named derrick.
hey d balls get over here.

Your such a fecking betch d balls.
by hughh ga dick November 29, 2007