"i buy most of my shit" refers to an individual whom buys most of his shit. Using "i buy most of my shit" can also refer to a type of behaviour which is triggered when the individual buys most of his shit.

This term, should never be used to "troll" or "mock" an individual, with only ONE exception:
- If the individual does buy most of his shit, it can not be offensive in any way, therefore it shall be freely used.

Literally everyone, ever. Including the writer of this definition.