Cowgirls vs the G-men

I don't follow football.  At all.  Nope, not even a teensy, little bit.  But even I can easily tell that this Facebook poster (ca Oct 2012) 

counting down the hrs till the game 4 the Cowgirls and the G-Men

prefers that the NY Giants win over the Dallas Cowboys in their fourth match-up this season.  I figured it out even prior to reading:

GO GIANTS!

My response

Really? must you insult girls this way?

was not intended (as might be interpreted, with a hearty guffaw) to say that Dallas really is awful, a bunch of pansies or sissies  (Remember, I don't follow football, so cannot assess anything about their teamwork or prospects.)  I was questioning why being a girl (or a sissy, which many children may endearingly call older siblings, before they can fully articulate her name or the word 'sister') is an insult.  Research has shown that girls do well, even better than their male classmates, in math and science--until they realize that girls aren't 'supposed to be good at math and science.'  Girls have taken the opportunities granted by Title IX to show they can be smart, funny, strong, creative, athletic. Separately, boys can be sweet, nurturing, kind, articulate.  And every child can whine or cry -- regardless of gender (or sexual orientation).

In my college field experience (ca 1990) the biggest insults were:  take the skirt off.  got your panties in a bunch? Accusations of PMS.  These were all uttered by hulking behemoths at other men, by the way, not to the handful of women that generally slogged on with 'our big girl panties' beneath our jeans and flannel.   I ascertained, therefore, that then, just as now, that the emasculating slights implied that being a girl is demeaning, less than, inferior.   Some might say: you are taking this out of context. Its not offensive to call a girl a girl, just to do so to a manly man.  You are taking it too personally.  Pardon me--you said that its not ok to be a girl.  Man up, buddy--how can that possibly not be personal? 

--he