CatLuke Share definition Flag A quantum event where two objects which should not collide/merge do so. The outcome is both very disturbing and extremely unstoppable. 'Wow, if those two make out, it'd be like a catluke!' CatLuke by TheIdiotPrince February 22, 2010 0 0 Get merch Get the CatLuke mug. Buy Now — $32.95 See more merch