Eating from under your ass
When you’re too lazy to buy a tool, but you’re still too poor to eat anything decent. You’re like a broke version of a beast.
He’s eating from under his ass because he’s too cheap to buy a screwdriver. His hands are raw from trying to fix his sink.
My friend’s eating from under his ass because he didn’t want to buy a $5 drill bit. Now he’s drilling holes in his own forehead.
She’s eating from under her ass because she didn’t buy a $10 ladder. She’s stuck trying to reach the top shelf.