A woman walked into the kitchen to find her husband stalking around with a fly swatter. 'What are you doing?' She asked.
‘Hunting Flies' He responded.
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'Oh! Killing any?' She asked.
'Yep, 3 males, 2 Females,' he replied.
Intrigued, she asked. 'How can you tell them apart?'
He responded,
3 were on a beer can,
2 were on the phone.'