This is the Kikuyu community brewing industry narrative – wisdom I got from Fr. Dr. Dominic Wamugunda wa Kimani when he used to teach me at UoN.
It goes down this way:
Mwai – One who skillfully and with utmost expertise hives the beehive from a tree log.
Mwaniki – One who sets the new beehive on a tree so that bees can come in.
Wanjuki – One who has power and skills to attract bees into the new hive.
Muthui – The honey harvester the honey.
Wanjohi – One who converts the honey into muratina (traditional beer).
Kinyua/Munyua/Mukundi (like me) – One who can consume the muratina but he does not get drunk. In another language, he drinks responsibly.
Muriu – One who drinks and gets himself too drunk and silly. He behaves like our modern day Central Kenya youths. (Note that this was a negative title unlike the others above which were positive).