Exceptions to the rule tend to prove the rule rather than disprove it. I am well aware that many girls had no interest in dolls or making mudpies, just as many boys would rather not play sports with the other boys. However generalizations are useful when discussing human behavior.
It boils down to mechanics, developement and practice. With a little of each, and some time, anyone can learn to throw properly.
Mechanics can be taught.
Developement limits the natural ability.
Practice enhances the above two, but only to a certain degree.
That degree depends on the persons physique and the methods used.
Having said that, not all girls throw like girls. Those whose physique allow the proper mechanics to take effect can throw just as good as a guy.
Boys tend to have better natural muscle tone to compensate for bad mechanics at an earlier age. Whereas girls have to work harder to achieve the same results.
I wasn’t taught how to throw “properly” until I was about 28.
Now I throw just fine. I can even win prizes at the Stampede by knocking down milk bottles. 
It should also be noted that when we say “throw,” we mean throw a BASEBALL in overhand style. Which again goes to the issue of practice.
Have you ever seen a guy recently immigrated for a place where they don’t play baseball try to play baseball? I have. A friend of mine in high school was from Sri Lanka and had never played baseball - or cricket, incidentally - and guess what? He threw like a girl.
The way you throw a baseball is just one of many throwing motions. Throwing a football is somewhat different. Pitching a softball underhand is MUCH different. Sidearmers have a totally different motion. Baseball is a particular way of throwing, one that you learn by practice.
In fact, even people throwing a baseball often have very different motions - they just don’t know it. Most people throw a baseball in a three-quarters style. Some, however, throw it in a true overhand pinwheel style, which is hard to learn if you’re used to three-quarters. Some people throw with a full back reach; others start at the shoulder (a bad habit I’m prone to myself.)
I believe that James Fallows had an article about this in the Atlantic about 10 years ago.
It’s not “boy vs. girl” as more “correct overhand vs. incorrect overhand”.
The key is to make sure that when you cock your arm back, your wrist is pointing away from your elbow and head.
Try throwing with your opposite arm and you will see what the problem is. Your arm will be pointing toward your head and you will only be able to get off a feeble toss, almost like a shot put.
Go and watch a college women’s softball game. Those women can throw the ball very hard overhand (the fielders that is). Anyone can learn to throw correctly.
The Fallows piece. (I remember reading it a few years back…I think it may have been referenced on NPR?)
Women who cant throw properly only do so because
a) No one taught them the right way
b) They dont want to learn the right way
c) A combination of the above
For example, my daughter couldnt throw a ball to save her life. I always tell her, “You throw like a girl!!” to which she answers, “I AM a girl!!” I try to teach her the right way but she wouldnt listen. (Condition B)
Just this year, her friend (also a girl) taught her the right way to throw and now my daughter throws beautifully. (Condition A) only problem is that she doesnt throw very hard (she’s skinny no upper body strength) so now I say “You throw like a wimpy girl!!” but this time I have to run before she catches me…
theres nothing mystic or biological about it (other than strength). They cant throw because no one taught them how. Why dont men use foreplay before sex?
When I started Little League as a little squirt, I was teased for “throwing like a girl” (I am male).
I practiced for a year until I could throw a ball decently.
By the way, I will never again say anyone throws “like a girl”, as I was whacked in the nose by a lady pitcher during a ballgame.
I grew up in the 50’s and 60’s and except for the occasional “Tomboy”, girls threw like girls.
This is not and has not been the case for a number of years. Our laws require and our culture supports girls having a fuller and more equal opportunity to play sports than in my youth. So more learn the skills.
OOOOOOoooo hope you wore a mask!
…did you get her number? she couldve done that just to show shes interested in you…
…either that or she wanted to take your head off… thats still some form of interest.
Interesting footnote: my father was stationed in Germany for several years, and he maintains that most of the German soldiers he encountered “threw like girls”. He also speculated this is why they used “torch” grenades rather than “pineapple” grenades–the throwing method for “torch” grenades was more natural for them. So from this viewpoint, at least, a proper overhand throw is definitely learned.
Is this supposed to make sense somehow? Just because an expression is ancient, doesn’t mean it’s true… Or that it even means what most people think it means. “The exception proves the rule” uses an older meaning of the word “prove”, meaning “test”. So the exception tests the rule, and the implication is, it fails the test.
But back on topic. I’m male, but have very little interest in any sport which doesn’t involve a CRT. My sister, on the other hand, is a total sports buff. Guess which one of us has the better pitch?