Me too.
I was riding with a Beemer guy to meet up with a club of them. They accepted me for a while as an honourary friend, freak or something -for awhile.
I was riding behind, the Beemer(s) went first... when I lost all power -engine quite and I tried all I knew while slowly decelerating down a long steep hill. There was a gas station at the bottom and he noticed and pulled in -me too. 'Twas the "Kill switch" guys. Never use the %$#@!^&* thing. Hit it some how. Beemer guy looked at me like I must be a newbie clutz-thought I had decades of riding on this guy.
One other time on something REALLY simple.
I was a teen and my Dad had a VIP guest stopping to visit in the driveway. I was trying to start a large flywheel pull start mower on a hot day. Pull, pull, pull, pull etc. Covered in sweat, I walked up to dad and said the %$#@!&* won't start. He noted that the spark plug wire was off, (by me to clean underneath). He kept a heroic straight face but the other guy dam near popped.
Skink away, slink away -hide -hide.