Top Definition
RDU
responsible drug use(r)

strategy of minimalizing the harm inflicted by drugs, by rational and occasional use of substances and deepening knowledge of possible side effects; or a person who uses this strategy
I'm not gonna mix prozac with dxm, bro, I'm an RDU.
by lesbobrrothers March 13, 2010
RDU
Really Don't Understand
I RDU why that chick is still in my bed and it's noon.
by BR Brennan February 11, 2008
RDU
The Red Division United, an Australian Guerrilla-Style Militia
I'm a Sergeant in the RDU
by Lieutenant Collins July 10, 2008

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