The Ferengi seem to have a problem with pronouncing the word human.
They say hyoo-män.
The correct pronunciation, which every other race seems to say, is hyoo-mən.
In their introductory episode in TNG, I got the impression that they were simply unfamiliar with with the pronunciation, having had very little contact with actual Humans. But by the time we get to DS9, there is quite a bit of contact between Humans and Ferengi, yet they still pronounce it the same way. There was even one episode that stood out (I can't remember it, but it was Quark talking to Nod). I got the impression that the Ferengi specific pronunciation was meant to be pejorative.
So why do Ferengi pronounce Human the way they do, even after likely knowing the correct pronunciation?