Do you speak Klingon?
Or do you want to?
If so, this is the book for you. Apparently some people actually do speak this nonsense. At least they do on The Big Bang Theory.
So, here you are:
The Klingon Dictionary: English/Klingon and Klingon/English (Star Trek, The Official Guide to Klingon Words and Phrases), by Marc Okrand (PB, 1985, $5, has a weak binding, and yellowed pages) Look for it on the new non-fiction table (L. sci. fi. )
(I just looked this book up on Amazon. It is amazingly rare. There is a more recent edition still in print. It is even available in e-book format. There are also entire books entirely in Klingon! Amazing, aint it.)