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a total brain-dead a** who f***s everything up in a way that makes you want to scream into a pillow
My boss said, 'You’re the dafu of this project!' I said, 'At least I’m not the one who turned the coffee machine into a lava lamp.'
My sister’s ex called her a dafu for forgetting their anniversary. She replied, 'I remember your face, though.'
My dog ate my homework. I’m a dafu. My dog’s a genius.