I was doing a head gasket on a car in the uk. Not only I decided to do it in the cold where I was freezing my nuts off lol, I took off the head, Cleaned everything up, Put the head back together, Did the timing etc, So basically I rebuilt the engine, I went to turn the car over and what did I see on the passenger seat… The head gasket still in its wrapper. What happened was, As I was getting the head all ready, Someone came out with a cup of coffee and disturbed me, As they disturbed me, I went to put the head back on the block so after I had a coffee and smoke, I’m like I think im ready to tighten it down now. So there I go and cracks on with the job.