Great vocabulary that you don't use everyday...

Imagine my delight to see this product and have the vocabulary to recognize it!

  I knew guano from some ultra boring junior high geography lesson ("... the key export of ____ is seagull guano...").  And of course Lamborghini makes the Murcielago, named because it goes like a bat out of hell.  

But finding guano de murcielago as a commercial product? Is this what Stephen King uses to grow his characters from slightly neurotic individuals to batshit crazy ones?

For my inner 13 year old, language study just doesn't get much better.