M-CITY 

Abbreviation of Megacity.Refers to TORONTO and its surrounding areas. The amalgamated city of Toronto, ie North York, Scarborough, Toronto, East York, and York. Term was first coined by Toronto Rapper: Richie Sosa
Term is also used to refer to Canadian rap group known as M-CITY which includes: MADLOXX, RICHIE SOSA,BOBBY COX, BLAZE BROWN and RL ESQUIRE.

"This is M-City home of them grimey individuals. M-City home of them gunshot rituals..." - RICHIE SOSA "M-CITY"

M-CITY by MEGA CITY'S FINEST May 2, 2006

m.A.A.d city 

Good kid, maad city, Kendrick Lamar‘s 2nd studio album, maad city is also a song on this album and maad alone can be an acronym for two thing
My Angels on Angel dust (Angel dust = cocaine or crack)
My angry adolescence divided

„This m.A.A.d city I run, my nigga„
Kendrick Lamar - m.A.A.d city

m.A.A.d city by anonymous March 3, 2021

I'm so (fill in city) 

It's pretty much an attention starved individual stating that they're proud of being from said city, and stating so by explaining that they are legit by either knowing of an old landmark that has been torn down or may still exist or by taking part in dumb ass past times which would most definitely get you arrested, or by reminiscing about past times, or phrases that no one uses or cares to take part in.

"I'm so (fill in city) I remember Menace II Society ended midnight movies at the Cinema 12."

I'm so (fill in city) by Benny Blue2 July 17, 2014