To be down for the cause.
Willing to die with, or for ones comrades.
Seattle term originating in the North End from Skreet Politicians as a term of Endearment between one another.
"Your not the homie unless your DidDown".
s. Loyal, Bout It, Commited, Willing, Comradery, Homie Love.
a. Betrayer, Sucka, Snitch.
Misspelling: Did Down, Didown, D-Down.