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1.
An acronym meaning "Dyed Hair Don't Care"

Often used as justification for irrational or unexplainable behavior which may have offended others.

Popularized by a collection of Michigan teenagers in response to a female's choice to dye her hair bright red despite parental disapproval.
Mikhail: "Hey Ashley, why do you have sex with so many guys?"
Ashley: "DHDC"

Mikhail: "Hey Ashley, why did you call my girlfriend a cunt?"
Ashley: "DHDC"
by Mikhail Em Moe March 06, 2012