This is TOTALLY off-topic but I couldn't resist...
As for "grok," it's a made-up word
Heh. There is actually a word "groak" which is a person who stands around and watches other people eat in the hopes that they'll be invited to join them.
Years ago I was given a book of obscure words as a gift. Ah, the hours of merriment we had with those words.

We started calling my sister's boyfriend her "groak" (later her husband, but the name stuck).
My favorite from that deck of cards? Mirkin - a wig for, um, private parts. As the definition said - "can such things really be?"
I wonder where that book is...