1 is a jerk

I recently shared with a friend that as a child I assigned numbers and letters genders. I don't remember how it began, but every time I hear a letter or number I always have a voice in the back of my head that reminds me of the sex.
Who knows where this originated? Picture Page? Sesame Street? Caliope? Or my own child head inner workings. I used to build fortresses out of Legos, forts from boxes and blankets. I also thought Dan Rather was stupid and punched him on our t.v. screen when I was four. I'm sure there was a reason, but it's long since gone. I also though I could fly if I only figured out how. Makes sense; arms, wings, pretty close.
No ideas where all my ideas come from, but I do know that M & N are girls, R is a jerky guy, 2 is a butch girl, and 9

is a sneaky bastard.