I took a shit in a subway cup
Why would you choose to use a cup instead of the toilet?
I am currently homeless living in a subway. I don't have anywhere else to go.
Even if you are homeless, you should still not use cups instead of a bathroom. You should find a public place, like a library, and use the restroom there. It is unsanitary to poop in a cup.
This is the only choice I had, I need a job to get a place to live.
Have you tried looking for a job recently. I might be able to help you find something local or give you a reference to get an entry level job. You could also check out a temp agency.