A woman walked into the kitchen to find her husband stalking a round with a fly swatter.
" What are you doing ? " she asked.
" Hunting flies, " He responded.
...
" Oh, killing any ? " She asked.
" Yep, three males, two females," he replied.
Intrigued, she asked, " How can you tell ? "
He responded, " Three were on a beer can, two were on the phone."