How to Tell the Sex of a Fly

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”.

Intrigued, she asked. “How can you tell?”

“Three were on a beer can, two were on the phone.”

Thanks to Don for sharing the laugh