Silly Old Bag

I’m a brown paper bag and I’ve not been too well So I went to the doctors to ask him to tell What was this sickness and what I had got Could it be cured, was it deadly or not So he took out his needle, I lifted my vest He drew off some blood for some sort of test The results came back quickly, the doctor looked glum He said it was fatal and passed by my mum I told him my mum was as fit as a flea So how could she pass this disease on to me He said it’s conclusive, no error, no way She’s a carrier, your mum, I’m sorry to say