A woman walked into the kitchen to find her husband stalking around with a fly swatter.
"What are you doing?" She asks.
"Hunting Flies, He responds.
"Oh. Killing any," She asks.
"Yep, 3 males, 2 Females," he replies.
Intrigued, she asks, "How can you tell them apart?"
To which he responds, "3 were on a beer can, 2 were on the phone."
