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: "Oh.! Killing any?" She asked.
"Yep, three males and two females," he replied.
Intrigued, she asked "How can you tell them apart?"
He responded, "Three were on a beer can, and two were on the phone.”