One of the few things I got out of reading Heinlein's Stranger In A Strange Land was the word grok, which I'll define as complete, total, metaphysical understanding.
Want to review some trig and have some fun? Then spit out your chicle, cleanse your aura, get your chicken feet off the desk in front of you, and watch a few of my students who obviously have too much free time!
Note the witty play on words with grok.
And yes, I might have to throw a few extra credit bones their way.