Who is Grok?
Grok is a friendly caveman from the Stone Age.
He has a big club that he hunts mammoths with. He will also use this club to smash anything he doesn't like.
"ME GROK SMASH ZCML!"
The word grok comes from the novel Stranger in a Strange Land by Robert A. Heinlein, and is defined in his book as:
Grok means to understand so thoroughly that the observer becomes part of the observed - to merge, blend, intermarry, lose identity in group experience.