idrcaa Share definition Flag Idrcaa is and abbreviated version of "I Dont Really Care At All". It is usually used while texting someone. (texting) "Bro I just took a big fat sh*t" "Ok dude, IDRCAA. That's disgusting. "Lol sry man idrcaa by Bhrianna Toms February 20, 2017 0 0 Get merch Get the idrcaa mug. Buy Now — $32.95 See more merch