[a sign reads FEMINIST CONFERENCE next to a closed door, a blue character shrugs and says…]
I don’t care
[next to the same door, the sign now says RESTRICTED FEMINIST CONFERENCE WOMEN ONLY, there are now four blue characters desperately banging on the door, one is reduced to tears on the floor, they are shouting]
DISCRIMINATION
SO UNFAIR!!!
LET US IINN!!
MISANDRY
The not so funny meaning of the statement was supposed to be that using female as a noun is usually considered offensive when talking about humans.
I’m not sure how that or the possible alternative and more amusing interpretation of implying your penis being a female of it’s species, deserves being called an asshole.
Also I don’t think I understood your second sentence because to my knowledge just under 50% of humans would be expected to have a dick which is notably less than everyone.