qej; veqlargh rur
"mean as Fek'lhr"  (common simile) KGT 

KGT 189:  All too frequently, one hears rumors about the fate of a student of Klingon who intended to say yo' qIj ("Black Fleet") but accidentally said yo' qej ("grouchy fleet") instead.

SEE ALSO:

naS             be vicious (v)
qu'             be fierce (v)
ral             be violent (v)
vaQ             be aggressive (v)