[elisaado]

I don't recommend the following but in our old house I used to tie my outlet ground (that was free floating) to the radiator which was grounded. It worked until my mother reported the shower water was feeling "very harsh".

[Cerium]

Sounds like the radiator was not actually grounded and the device plugged in had a ground fault.

[doubleunplussed]

If the radiator was actually grounded, why would there be any effect on the water?

[baxuz]

Yeah, I could theoretically tie my outlet ground to the gas pipe. Doesn't sound like a good idea.