Regional slang specific to Christchurch New Zealand.
Christchurch is affectionately known to many locals as Shitcity due to the city's lack of actual city since a devastating earthquake in February 2011.
A Shitcity stem slut is a special breed of Christchurch meth head known for sucking cock in the hope of a turn on the glass barbecue.

Shitcity stem sluts can be any gender or identify as any sexuality.

the thing that you don’t have when you’re phones percentage is over 20