Ok here we go... I was working on my 68 Charger R/T when I was 17 or 18 in my parents garage, I was installing new Crager S/S wheels & tires on the car & doing a shift kit in the transmission while I had it in the air, on some cheap a$$ Grand Auto pin style stamped steel jack stands, I was under the car I kept hearing a pop noise every once in a while, I got out from under the car to see what's up, I saw the punk 11-12 year old kid across the street he had shot my car with his Be Be gun in the past so I was suspected he was the cause of the noise I went over tore into him told him I was going to kick his butt, he swore it wasn't him & that his father beat his a$$ for doing it the last time, so he wasn't ever going to do it again.... I walked back to the garage & went back to work under the car, I heard the noise a couple of times again, jumped out ran over & threatened the kid again, he again swore it wasn't him, so I knocked on the door his dad took him inside & beat his butt yet once again... I walked back to the car got under & was messing with the trans when all of a sudden the car rocked backwards & fell off the stands with me under the car 3800lbs of Charger on my chest & only 1) of the 15"x10" with N50-15 wheel tire combo on the back, the others still sitting on the floor beside the car, my head luckily was in the tunnel area, but my arm was under the Transmission cross member, no one was home to hear me scream to help me out from under the car... I was laying on an old wood creeper it was basically split in two, I was able to crawl out the back of the car under the 1) side were the wheel was on luckily the car was kind of propped up by the broken cheap a$$ Grand Auto jack stands {the weld popped on or at the spot welds}, luckily it didn't completely crush me... I put the wheels & tires on 1 at a time, then buttoned up the trans & went to the Emergency room at the hospital... Well I told the nurse my arm hurt, she said they will have to X-ray it, I sat down in the waiting room my chest was hurting a little I put my fingers on my sternum area & they went way in between my ribs, I freaked out & yelled for the nurse, they took me into a room instantly.... I woke up 3 days later with a in a drug induced stupper with a split/fractured sternum & a broken left arm & 7 cracked ribs, multiple scraps & stiches... It was like 10 months to a year or so before I could play Football or Baseball, let alone work on my car etc... After I got home from the hospital 16 days latter, I had to go across the street & tell my neighbors kid & parents I'm sorry for accusing his kid of shooting my car with the Be Be gun again.... The thing is, he ended up helping me with a bunch of my future projects & even went racing with me... Well that's my Funny "NOT" story of jacking up or working on a jacked up car.....