A woman walked into her house 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, "Three were on the TV remote, 2 were on the phone."