Wiper switch circuit breaker and a jolt

Yote said
Ever been working on your car on a hot day and sweating ??? Then lay your inner forearm across both battery posts. It won’t be ‘too’ bad, but can still get your attention.
Yote

Yep, same thing with a 9V battery on your tongue. Skin resistance is about 1000 ohms dry, drops fast when wet.

Sitting on a vinyl car seat & touching a piece of metal takes a little more voltage to get a shock than 12V.

My comment was just a theory, I have no evidence.