"to bust (someone's) balls" means "to annoy (someone) by complaining" its a common phrase that is used by young people, "street English" and the following dialects: AAVE Chicano English Example: "quit busting my balls over me forgeting our anniversery babe!" note: almost always rude

Your mother’s corpse is burning in hell and your father’s penis is chopped off by a knife. Your grandmother is shredded to pieces. And your grandfather’s head is fucking chopped off by a fucking chink chong. You stupid fucking cunt, you will be killed in the most painful way possible 草你妈傻逼操你祖宗十八代王八蛋你妈死了你妈火化笑哈哈 fuck your ancestors to the 18th génération watch how your mother’s bone is cremating and you still laughing at your mother's Dead body you stupid cunt.Your mother’s corpse is burning in hell and your father’s penis is chopped off by a knife. Your grandmother is shredded to pieces. And your grandfather’s head is fucking chopped off by a fucking chink chong. You stupid fucking cunt, you will be killed in the most painful way possible 草你妈傻逼操你祖宗十八代王八蛋你妈死了你妈火化笑哈哈 fuck your ancestors to the 18th génération watch how your mother’s bone is cremating and you still laughing at your mother's Dead body you stupid cunt.Your mother’s corpse is burning in hell and your father’s penis is chopped off by a knife. Your grandmother is shredded to pieces. And your grandfather’s head is fucking chopped off by a fucking chink chong. You stupid fucking cunt, you will be killed in the most painful way possible 草你妈傻逼操你祖宗十八代王八蛋你妈死了你妈火化笑哈哈 fuck your ancestors to the 18th génération watch how your mother’s bone is cremating and you still laughing at your mother's Dead body you stupid cunt.

it is common slang, but not polite. Okay to use with people you know very well, but you would never use it in a formal situation (a job interview, meeting someone for the first time).

Why would I "bust my balls" is street colloquially slang for "why would I work so hard". it is more common amongst "thugs" and criminals who use it to say "why would i put so much time, work and effort into whatever "scam" "fraud" "con" "robbery" etc when/if there is no reward at the end.. In the gangsta thug genre you refer to, the "thugs" use it when they are annoyed at loosing out financially. Slang changes rapidly and is constantly evolving and with different meanings in different countries even from one state or county of a country. The word "thug" comes from the Indian word for these type of people. https://en.wikipedia.org/wiki/Thuggee

dialectal, don't judge