Rad-tastic-ristic-otic Share definition Flag An adjective for explaining how rad/awesome someone is. Nessa is Rad-tastic-ristic-otic! Rad-tastic-ristic-otic by Klawlight April 22, 2010 0 0 Get merch Get the Rad-tastic-ristic-otic mug. Buy Now — $32.95 See more merch