26.03.2013: Here you are ladies.

A woman walked into the kitchen to find her husband stalking around with a fly swatter in his hand. "What are you doing?" she asked. "Hunting flies" he replied.
"Oh, did you manage to kill any?" the wife asked.
"Yep, three males and two females" he replied.
Intrigued, she asked "How can you tell them apart?"

The husband replied, "Easy......................three were on a beer can and two wre on the telephone."