This is the adorable moment a tot explained his type 1 diabetes to his mum - at just 20 months old.<br /><br />Bain Brandon was diagnosed in August of last year when he was just 12 months old.<br /><br />Marlee Brandon, 27, from Starkville, Mississippi, US has been teaching her son about his care in simple terms since his diagnosis.<br /><br />But Marlee was shocked when her 20-month-old son was able to explain parts of it to her.