A woman walked into the kitchen to find her husband stalking around with a fly swatter.
“What are you doing?”, she asked.
“Hunting files,” he responded.
“Oh! Killing any?” she asked.
“Yep, three males, two females,” he replied.
Intrigued she asked, “How can you tell them apart?”
He responded, “three were on a beer can, two were on the phone.”