If you mean the bar, then even stainless of that size is going to be very low resistance - milliohms?
If you mean the body, then I believe it gets complicated. Skin resistance will be diminished by the piercings having a relatively large contact area and probably being somewhat sweat covered - I’m not sure exactly what the ‘skin’ inside the piercing tunnel is like. Certainly you can feel current from a 9V across the wet inner-body skin of your tongue.
The internal bath will be quite low resistance because the inside of the body is a sack full of salty water.
It wouldn’t be fatal, even across the chest, but it could hurt.
unexposedhazard@discuss.tchncs.de 3 days ago
Just tried this out. The battery was already pretty dead, but it still raised the temperature of the wire by 9°C in like 5 seconds. If the battery had been full it would have gotten much hotter much faster.
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mnemonicmonkeys@sh.itjust.works 2 days ago
You missed their point. They were suggesting connecting the battery to different nipple piercings, thinking that would cause the electricity to travel across the chest
Cris_Color@lemmy.world 2 days ago
The person I was replying to (to my understanding) was talking about connecting it across a two nipple pericings, one on each side
I would be flabbergasted if 9v were even remotely capable of overcoming that kind of resistance