Runerub Share definition Flag A way to say I love you, without actually saying, usually in front of your mates, correct response is runerub-oo, as in I love you too. "Hey, Runerub," "Aw, Runerub-oo" "Ya," Runerub by Duvessa June 2, 2008 0 0 Get merch Get the Runerub mug. Buy Now — $32.95 See more merch