Grow your own food and hunt
but seriously, if i needed food that bad and couldnt afford it, i sign up, theres no shame in it.
Back in the early 80's when my dad was at med school, he had to pay his way through plus worked 3 jobs and still went hungry, so one day him and his buddy went resorted to hunt their own food. (he's not a hunter by any means). So they walked to the edge of campus with a .22 in broad daylight and shot a doe on the edge of a highway were they keep the grass cut. They field dressed it right there and brought it back to his dorm on campus and hung it upside down in his shower. It fed him for a quite a while.
You probably couldnt get away with that now though.