All my life I have thrown with my left, and written with my right. I can not, at all, throw with my right, or write with my left. I have never met anyone else like this. As far as eating I go leftie, shaving I go rightie. If I am batting in baseball I do it rightie. I do something else only with my left (I doubt anyone wants to know exactly what that is).
Is there a term for this? Which side of me is dominant?
Is this “you”?
I believe the correct term is “freak.” 
In today’s more enlightened society, you can be whatever you want. However, the answer lies in which hand do you use “naturally.”
Which hand do you use to pick up stuff?
Which do you hold stuff in while inspecting it?
Which hand do you hold the phone receiver in vs. dial the number with?
Which hand do you grip something with when you need a strong or delicate grip?
Which is your better hand to punch with?
Which do you comb your hair with?
Make yourself up a little spreadsheet of tasks you perform with one hand, and then figure out which hand you favor (things you do with one hand or the other because the task is structured that way don’t count, like using the gearshift on a car.) There’s your answer.
Thanks brandocet… that was a great link. I may be a freak, Jeff, but for many reasons other than this. As far as a checklist is concerned. I am pretty much split right down the middle 50/50.
How about that?? Not too many of us out there huh??
Here is my modus operandi.
Eat - Left
Write - Left
Bat - Right
Golf - Right
Kick - Left
Throw - Left
Shave - Right
Something Else No One Else Wants to Know - Left
I am surprised that you throw with the opposite of your writing hand - I do both with left and therefore consider myself lefty.
Further, the only two other people that I know of who throw with their left but bat righty only (not switch hitters) are Hall of Famer Rickey Henderson and Former President Geogre H.W. Bush.
[li]I write with my right hand[/li][li]Eat with both. Sometimes I can switch in the middle of the meal and not notice.[/li][li]Throw with right[/li][li]Dial on the phone with both[/li][li]Open doors with both[/li][li]Examine things with both, but mostly my right hand[/li][li]Pick up the telephone with both, but mostly my left[/li]Catching a ball with my right
I am completly right handed and right footed except when playing 2 handed batting/hitting sports such as baseball cricket and golf. I play these left handed. Doesn’t really have any disadvantages but in tennis its an advantage as my one handed forehand is completly natural and i have a completly natural 2 handed backhand. Most people have a weak side. I have only heard of one other person that does this: David Gower (english cricketer).
Rickey Henderson has had a long and successful baseball career as an outfielder who throws lefthanded and bats righthanded. Cleon Jones also had the same combination. A bunch of pitchers also have had that same combination.
Go to a Padres game and ask Rickey for an autograph. Tell us which hand he uses. I would bet on the right hand.
I’ll just add a “me too” to the list - I’m about 50/50 - left writer.
And yes, I’m a freak.
From what I remember of motor development, as long as you have a preferred hand/side for various tasks, it’s OK if the side varies. The problem comes in when you switch hands for individual tasks.
So if you always bat righty and always write lefty, great. It might be cause for concern if you couldn’t decide which hand you liked better for the task. That could be considered “incomplete dominance”. In a young child, this might be cause for concern if say, the kid didn’t have a preferred hand by 6 or 7 years old.
Now I’m sorry I don’t have a cite at this moment, but I remember being told by my motor development prof that “ambidexterity” as it is commonly understood, is a myth. People can get very skillful with both hands/sides, but should always have a preferred side. Not having a preferred side would be considered incomplete dominant.
The example given was three kids waiting at a bus stop on a winter day. One is right handed, one is left handed, and the third is “ambidextrous”. Three other kids throw snowballs at them. The right hander blocks it with his right hand, the leftie blocks with his left, and the third kid hesitates and gets hit in the face because he can’t automatically react with a dominant hand.
I’ll look for cites…
I like to use the term “cross-dominant.” I also throw with my left but write with my right. It seems that if I am doing something that requires skill, I need to use my right hand, such as writing, eating with chopsticks, playing ping-pong, sewing, etc. If I am doing something that requires strength, I have to use my left hand, such as throwing, playing tennis, bowling, etc.
I wouldn’t use the term freak to describe myself. Maybe just different. Welcome to the club (I’ll show you the secret handshake later.)
I suppose the same hold true for me, O-Man, as far as the skill vs. power deal (although I am still wondering why doing “that” uses my power hand, instead of my skill hand). Hey, show me that secret hand shake, but what hand do we use?
As far as Henderson, if you look at the cite towards the OP, it lists a whole bunch of people like this, mostly baseball players, and says what they write with and what they throw with. Babe Ruth, Barry Bond, Ken Griffey Jr., Stan Musial… all throw lefty, and write righty.
The term I’ve heard for this is “mixed dominant” which I am as well - I like that term much better than “incomplete dominance”
Write: Left (so I call myself lefty)
Eat: Left
Throw: Right
Bat: Right
Fence: Right (had to check that though)
Golf: Right
Hammer: Left
Something that no one wants to know: Left
Read: Left (book in left hand)
Dial: Right (I used to think that phones were lefty until someone pointed out that its so that righties can write while holding the phone.
For new things (such as fencing) I did have to check myself to see which hand wanted to hold the sword. My son showed signs of mixed dominance but that is fading to righty (except for golf).
And I used to use the general distinction between skill and strength as well. Except that it didn’t explain fencing, so I gave it up.