#1 - been there, done that, many times because I own multiple vehicles but primarily drive the automatics. Also braking without pushing in the clutch, but that's not as embarrassing because it's less noticeable by other drivers.
#2 - Been there, done that, got the T-shirt, burning the equivalent of probably two complete sheets of body covering skin.
#3 - Not that way, but drill, grinder, a saw wounds for sure.
#4 - My pet mechanic trick is working underneath, bang my forehead on the vehicle, jerk my head back and bash the back of my head into the ground, then jerk my head up and you know what happens. My record is two complete cycles without stopping.