We were discussing the bubonic plague at work, as you do, especially when some Colorado girl comes down with the Black Death.
Marcia: "The plague? Really? How could they tell?"
Me: "The buboas."
Me: (in desperation) "BuBOAS. She's a girl." (So of course you would use the feminine.)
Marcia: (knowing she is correct) "BuBONS."
The guy at our table rarely opens his mouth. He opened his mouth. I thought he'd be making a BOOBons remark.
Instead, he said, "But she's a girl ... I thought Todd Akin said girls have a natural ability to repel the bubonic plague."