untucked tan t-shirt, ACU bottoms, and tennis shoes
Sounds like the processing "uniforms" we wore before we were issued complete uniforms and boot camp started for real. Who in their right mind would ever want to look like that?

a fucked up ACU uniform
I admit that people who go out in public dressed as such make me cringe too.

I think the line is where the number of uniform components make it difficult to distinguish the difference between a very poorly worn complete uniform and parts of a uniform worn for work or whatever.