magx had taught him but also grasped that frak would not grok this truth until he had become big grok big with his hum-hum ... their hearts fluttering like little bird 's wing until he and she , frak and darlm , embraced in big grok big hugx ... it would only be then that the magic of big grok big would and could be manifested ... as she received him with her m-o-o-o-n grok .