> So what is the non-arbitrary reason? The one mentioned in the article?
You seem smart enough to have figured out the implication, but I believe s/he meant that the inner portion of the labia and opening to the vagina are pink; the word pink is also used as a slag term for the female genitalia.
> Sorry to be crude, but there is a very non-arbitrary reason for pink to be associated with females (and to a lesser extent, blue with males).
I thought the unstated crude, very non-arbitrary reason the grandparent poster aluded to was clear, but spelled out what I thought it to be in case I'm either wrong or someone didn't draw the inference.
You seem smart enough to have figured out the implication, but I believe s/he meant that the inner portion of the labia and opening to the vagina are pink; the word pink is also used as a slag term for the female genitalia.