Okay, so I saw this phrase “book em danno horse” somewhere and I was like, what the heck does that mean? I’d heard “book em, Danno” before, from that old show Hawaii Five-O, but never with a “horse” at the end. So I got curious and decided to do some digging.

First, I just typed “book em danno horse” into a search engine, you know, just to see what would pop up. Mostly, it was just a bunch of stuff about Hawaii Five-O, the original show. Nothing much about the “horse” part.
Feeling a little stumped, I tried a different tack. I searched for “book em, Danno” by itself. Got tons of results about that phrase being a catchphrase from the show, used by the character Steve McGarrett, played by Jack Lord. He’d say it to his partner, Danny Williams, whenever they caught the bad guy.
Still no closer to understanding the “horse”, I decided to get creative. I figured maybe it was some kind of inside joke or a reference to a specific episode. So I started looking up episode summaries and character lists from Hawaii Five-O. Scrolled through a bunch of websites, read some fan pages, even looked at some old TV listings. Nothing.
Then it hit me. Maybe it wasn’t about the old show at all. Maybe it was related to the newer Hawaii Five-0 that started in 2010. I’ve not seen that one, but maybe it was different. I went back to the search engine and typed in “book em danno horse new Hawaii Five-0”.
Bingo!
- Turns out, there was this character in a few episodes named Kamekona Tupuola.
- He’s this big, friendly guy who runs a shrimp truck and helps the Five-0 team sometimes.
- In one episode, he apparently says “book em, Danno… horse” as a joke, kind of like his own version of the famous line.
So, mystery solved! It’s just a funny line from the new Hawaii Five-0. I spent way too much time on this, but hey, at least I learned something, right? And now I can share this super important information with the world.

Man, the internet is a wild place. You can find anything if you dig deep enough.