We must be brothers from different mothers. I swear your luck sounds like mine and thats why I TRY not to get under cars very often anymore, especially with the 2 bad shoulders so I keep it down to once or twice a month. lol
Ive had more than one car slip off a jack but I always surprised myself at how fast I can move when surprised and managed to get out of the way. Had my escalade roll off the ramps out the garage while I was under the back bumper and I had a STEEP driveway and a swamp on the other side. Dont ask me how but next thing I knew I was in the drivers seat pulling the emergency brake. Still no clue how I got there and didnt get run over.
I remember one day when I was in a BAD mood (needed an attitude adjustment) trying to pull the transmission out of a 72 Road runner sitting on 4 jack stands and couldnt get the transmission to come out until it slipped off the floor jack and hit me in the face splitting my lip and chipping my front tooth. I instantly started laughing and felt 100% better. My mom thought I was dying due to all the blood but I felt fine.
Ive been hit in the head so many times hard enough to split the skull open on most people and halt the time dont even know I did it. I was hit in the head by a 2x6 rafter doing construction and my co worker saw when it happened and pretty much screamed OMG. I turned around and asked him what happened and if he was alright. He just stared at me with his mouth open and then said not him but me. It took me a second to figure it out and just said yeah I'm fine. lol
Ive had blood running down my face from head wounds I didnt even feel and everyone telling me I need stitches (didnt get them) and broken nose from hitting a large tree being George of the jungle, literally.
haha, having your hat and safety glasses on reminds me of when I was using a BIG 2" hydraulic jack to lower the nose gear of a 747 and it locked up pole vaulting me into the air after hitting my chin and side of the face and sent my glasses and hard hat flying about 20 ft. almost hitting another guy walking buy. He also just stood there with his mouth hanging open at first and asked if I was OK because I just shook it off. I said yeah fine and picked up my glasses and took the hydraulic wrench back to the tool room and got another one. I even got an award (and a slightly black eye) for wearing the proper safety gear.
I honestly TRY to double check everything now days because my wife gets pissed at me if I get hurt or almost and I really like being with her so I want to stick around a little longer. Funny how someone 35 years your junior can make you appreciate life more.
BTW, Dude, that is not a good jack point...

Yeah I know you know but you should have already known.