Human laboratory

I'm a dog locked in a cage, my body exposed to chemicals
My body used to do the dirty work
Cheap labor, but I have to eat
I'm a pig in the navy, my skin blow-torched to test weapons
At the mercy of someone who says they know it all
Says they're acting on my behalf
I'm a monkey under their eyes watching me for a reaction
Getting me to perform their useless jobs
Just changing ads on shopping carts
Living under watchful eyes
Waiting for me to putrify
Stuck in their factories
Caged in their laboratory