‘Camels don’t store water in their humps’, another friend suggested. ‘They actually store water in their blood’. We were back to camels again. ‘Can you tell what blood group a camel belongs to?’
Anyway, the next half hour is all about blood groups. They had heard of the ABO blood groups but it all started turning pear-shaped when I mentioned the Rhesus blood groups. ‘Now you’ve moved from camels to monkeys’, the first friend pointed out, helpfully. I explained that the Rhesus blood groups were indeed connected to the monkeys of the same name. A simple conversation about blood groups had become invaded by camels and monkeys. How could I stop them thinking I am working at a zoo?
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