يا جزمة يا ابن الجزمة (ya gazma yibn ig-gazma)
When someone from Arkatrash calls you "ya gazma", they are saying you are a shoe. People who were not born into the tongue understand the words, of course, due to the gift of one hundred tongues, but the meaning escapes them.
The shoe is associated with dirt and the ground in Arkatrash and by extension the unclean and sullied. You can be sure you have been seriously insulted when called a shoe in Arkatrash. The above line, in its entirety, means "You shoe, you son of a shoe.", so whoever is throwing that at your head is out to cut deep.
Interestingly, however, the word "gazma" is actually used ironically by inhabitants of the western side of Arkatrash where the Sullied Ones live. They often call each other shoes as a form of showing affection and criticizing society's view of them.
''Why don't you get your pots somewhere else, ya gazma!'' Hapat spat on the ground and Yillep's eyes widened.
The tourist from Aquaris looked nonplussed at the lank boy that had just yelled at him for bumping into his side while viewing Yillep's inventory. ''Ya... did you just call me... a shoe?''
''Out! Out, Hapat! You naughty boy! Do not curse in my house, you hear me! Out!''
Hapat spat again and left.
''I am so sorry, dear customer,'' Yillep apologized, his eyes downcast.
''I still don't get the shoe bit.''
"It is... not a nice thing to say here. Please, cast it out of your mind; the boy is young and knows not what he is saying."