You were very lucky. As others have said most of us have done something similar at one point.
I forgot to tighten up one of the rear wheel spindle nuts on my old BSA Bantam when I was still a teenager
I was in the middle of doing some serving on the old bike when I needed to go and help my Dad who had broken down in the car a good few miles away. So I dropped what I was doing immediately and went off to rescue him. I must have used another vehicle to do that.
It was only when I went to go home with my girlfriend at that time I noticed the nut was lose. We had only ridden the bike seven or eight miles into town with the nut lose
Even though it was a long time ago I still remember going into that motor accessory shop across the road from where the bike was parked to buy an adjustable spanner, a Bahco wrench which I still have today, so I could tighten up that nut.
Chris.