I grew up on a farm, we raised beef cattle. We always had some old iron sitting around. Dad had a half cab Scout, a 69 Jeep Commando and plenty of 4wd trucks.
My first time I locked in the hubs and pulled the T-case into 4-low was when I was 9 or 10 (1976). I was in our Commando (Duantless V-6/Auto). Dad had me haul a crate of freshly dug potatoes across the creek from our garden and to our cellar. It had been raining hard and I couldn't resist the fun of goosing the throttle and letting the old "Co-Op" snow tires sling a little mud on the way through. I got chewed out but it was worth it!
At age 12, I bought a 1941 Chevy ton and a half military truck with my allowance money. Inline six, dual wheels in the back 4wd, it was a beast! Dad would say, "Son, go get some fire wood", so I would just drive out into the woods and knock a tree over with that beast and then drag it home.
I wish I still had that truck, I had a blast tearing stuff up with it. Great memories!!!