Today I asked Kendra to explain the the difference between even and odd numbers.  It took me awhile to unravel her answer:

Me, "Kendra, Do you know the difference between even and odd numbers?"

Kendra (slowly, with a thoughtful look),  "Well, girl numbers are odd, but boy numbers are even."

Many men would agree with her assessment that girls are odd, but I was a bit confounded by the whole gender/number thing and ask for more clarification; "So...Is 5 a boy number or girl number?"

Kendra replies, laughing (as though it should be SO obvious), "5 is a GIRL number!"

My follow-up, "Ok, so 5 is female; is it odd or even?"

Kendra (answering sweetly and patiently, but the amusement in her eyes reveales she feels this has already been explained sufficiently), "Odd. Girl numbers are all odd right now."

Me, "Hmm... Ok, Is 10 male or female, odd or even?"

Kendra, "10 isn't a girl or boy yet. But it is even because 0 and 2 are even and it goes every other one. It goes; zero, then two, and then skip three to four, and skip five to six, then skip to eight then ten, so it is even.  It will be a girl number, then a boy number, and when it is a girl number the boy numbers will be odd."

Frighteningly, I'm beginning to understand her, so I ask one more question to cinch it, "Is 7 a girl number or a boy number?"

With an excited bounce and a melody in her voice, "It is still October, so it is a girl number still..but not for long!"

So, can you figure out the Kendra logic? What makes the numbers male and female?