forgottenpnffacts: -Doof collects coins due to his fear of vending machines gaining awareness and be
forgottenpnffacts: -Doof collects coins due to his fear of vending machines gaining awareness and becoming the dominant race-Doof fears vending machines becoming the dominant race as he imagines they would force-feed him vending machine snacks that he hates (like tiny, stale vanilla cookies and fake red licorice) -- source link