When I was in undergrad, I co-led a student homeless outreach program that would go out and hand out pb&js, bananas, water, etc. every week.
I was paying for supplies for the entire program out of my own pocket, so being a broke college student, I'd take regular bananas and mark them as the overripe ones at checkout, until I got caught a few times.
Maybe that qualifies as a social justice thief?
Not a doctor, but depending on your age, I believe puberty blockers have relatively minimal side effects and just "pause" things for prepubescent folks to figure stuff out.