People who don’t know the language but think it’s funny and skim an intro tend to walk up and wave at you with a Vulcan “Live long and prosper” finger split and say something like “Kaplaaah, Dude!” 

They think it’s the Klingon equivalent of the Italian “Ciao”. You say it for “hello”. You say it for “goodbye”. They are clueless that it actually means “Success!” and is appropriate for times when a zealot alludes to a mission you and they have in common and imply {maQapjaj!} They think it’s something closer to “Howdy” or “Tatah for now”.

I’m sure Okrand gets a lot of that.

So, “Hi”.