I'm in....
My first knife was a small peanut. I was a week into first grade and I went to visit my grandfather for the weekend. Prior to this, I had used a knife many times under the supervision of either my grandfather or father, but had never actually "owned" a knife.
On Sunday, just before my mother picked me up, my grandfather gave me a small peanut-style 2 bladed knife, saying
"Now that you're going to school, we can't have you borrowing anyone's knife at school."
That statement meant that once I had started school, I should have my own knife.
About Halloween-time, the pencil sharpener in the classroom literally blew apart in a shower of parts. Y'all "more mature" individuals know the type I mean - a shiny, stainless-steel shavings catcher with a fishing reel style handle on the side. I needed to sharpen my pencil, so I pulled out my knife and sharpened it in the manner I had been taught. I was then bombarded with requests by the other kids to sharpen their pencils. The teacher, Mrs. Huff, had no problem with me using my knife to sharpen their pencils.
Pen knives got put on a lot of kids Christmas lists that year. After the Christmas break, nearly every kid in class had a knife. Since the girls wore dresses, they had no place to carry knives but most ended up with one in their cigar box of crayons and pencils.
Either my grandfather or father would sharpen it as necessary until I got proficient at hand sharpening. I carried that knife to school everyday for over 2 years until the main blade got a little wobbly. At that time, my father passed on to me another used peanut, this time one he had been using every day at his feed store. I used this one for a while and then was given another hand-me down. I think sometimes my father and grandfather used the excuse that "Wayne's knife" was worn out as a reason to buy a new one for themselves because the condition of my new users became progressively better. I probably still have a half dozen or more of those old knives in a box somewhere. Need to dig them out and take a picture.
My first traditional fixed blade came 4 years later.
In August, 1965, shortly before I started the 5th grade and was still only 10 years old, I was helping my grandfather prep the combine for maize harvest. His left shirt sleeve came unrolled and got caught in one of the gears/chains. He pulled out his belt knife, a Kabar 1232, sliced his sleeve off and said,
"That's why you carry a fixed blade when working on machinery. I would never have been able to get a pocket knife out and open in time."
I asked him,
"Well, Popo, what if it had been your other arm?" He was like I am - vertically challenged, fat, with short arms.
He looked at me a little funny, then his eyes widened. He walked over, turned off the tractor and said
"Let's go."
We drove the 3 miles to town and went to the Western Auto store. They didn't have any Kabar 1232s in stock, so he bought the closest thing they had to it - a Western L46-5, the post WW2 version of Western's G46-5, the "Baby Shark" knife.
A couple of weeks later, the Western Auto owner called him up and said
"Hey Alvin, We got those little Kabars in if you still want one."
So my grandfather went and got a 2nd 1232 to carry. A week or 2 later, when I spent a weekend at the farm, he gave me the L46-5, saying
"If you're smart enough to come up with that question, you're old enough to have your own fixed blade."
I still have most of my first traditional folders and that first fixed blade, along with the first folder I bought with my own money - a Buck 110.
I still carry paired Kabar 1232s, Kabar 1260s, Western L46-5s or Western L48As (very similar to 1232s) literally everyday 52 years later. The exceptions are that I carry Kabar early-1980s 1227s for Sunday church services, funerals and weddings.