"seven eight nine"
Translation:Soch chorgh Hut
The joke obviously doesn't work in Klingon. But that brings up the question of which number words are homonyms in Klingon.
Also means show, display (picture).
Also refers to an aide. Not really a homonym; just a specialized use of cha'DIch.
Also means not yet.
Also means wait (for).
Also a slang term for prisoner (and a pun).
In addition, the words for four through eight, loS, vagh, jav, Soch, chorgh are also the names of the notes in the standard Klingon nonatonic musical scale (the first three names are yu, bIm, and 'egh, and all are puns).
I leave it as an exercise for the reader to construct a joke similar to the original.