Stands for "I really don't know." A version of the word idk, or "I don't know." Used in chat rooms. When you're really at a loss for an answer to a question is the best time to use it.
Shannon: So, what did you think of that Chuck Norris horror movie?
Billy: Irdk. But it scared the shit outta me.
Billy: Irdk. But it scared the shit outta me.
by SaraBellz July 6, 2008
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Get the irdw mug.gianna: how did the chicken cross the road?
kayla: how?
gianna: with it's feet!
kayla: irdgi
gianna: -__-
kayla: how?
gianna: with it's feet!
kayla: irdgi
gianna: -__-
by your gay moustache January 18, 2010
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