A young woman walked into the kitchen to find her husband stalking around with a fly swatter. "What are you doing?" she asked, leaning against the bench and arching her eyebrow.
"Hunting flies," he responded.
"Oh." She paused. "Killing any?"
"Yep. Three male and two female."
Intrigued, she asked, "How can you tell?"
Her husband smiled and responded, "Easy. Three were on a beer can and two were on the phone."