short for I really don't care. Used in chat rooms and texting.
Person 1-I am going out to a fancy dinner tonight!
Person 2-irdc
by whoreslut64 June 13, 2009
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acronym sometimes used during online chat converstaions for which it means "I 'REALLY' DONT CARE.
more often used acryonym IDC, meaing: I dont care; but the addition "really" gives it more of an intense meaning.
Nicole: OMG, i cant believe i have 3 test tomorrow, i dont know how im gonna do it? cuz today ive had like, THE worst day!

Rachel: (unenthusiastic mood) oh wow, that really sucks.

Nicole: I KNOW RITE?!?!?! And like, i dont think i can like do it cuz ive had this horrible day where these people i dont like, gave me this dirty look. and i was like uhhh! and they were like.......

Rachel: OMG Hold on one sec, IM SORRY BUT, IRDC bout ur freaking probs!!

Nicole: *completely shocked and gets offline in more rage*

Rachel: *speaking to oneself* Thank God.....
by MikaRose November 5, 2010
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