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, 3 males, 2 Females," he replied.

Intrigued, she asked.
"How can you tell? "
He responded,
"3 were on a beer can, 2 were on the phone."