So if your "horn", so to speak, is less than 3", you are antlerless, i.e. a doe, i.e. a girl. So guys with little horns are girls anyway so I don't see the problem with all this gender confusion as it relates to this.

There is one caveat here though. If you buy a big truck with oversize tires and a loud exhaust, regardless of the size of your horn, you then become a man again. So watch out for boys with little horns and big trucks. They are not legal on your buck tag, even though they think they are. They are just compensating.