Oddly, I couldn’t find any examples of invective used in the paq’batlh. Perhaps they’re considered inappropriate in religious/classical literature - even for Klingons! (qunnoq, are there any in the Iliad or Odyssey, or have these texts been expurgated over the centuries?)
And finally in the TNG episode "The Mind's Eye" when Picard failed to convince Governor Vagh that the Federation wasn't supplying weapons to Kriosian rebels, Vagh shouted: "You speak the lies of a *tah-keck*!" Picard calmly leaned forward and replied, "*Qu'vatlh guy'cha b'aka!*" Vagh complimented him: "You swear well, Picard. You must have Klingon blood in your veins." (Spellings from the closed captions).
Obviously the writers just strung some words together, but Vagh accepted it.