It doesn’t take a biologist to figure out some things. Observe:
A woman walked into the kitchen to find her husband stalking around with a fly swatter.
“What are you doing?” She asked.
“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, and two were on the phone. ”