Never heard of it, but your ground pin in a plug just goes to a three or four foot steel or iron pipe next to your house. In times of droughts these fail to ground properly.

GFCI outlets will make sure the neutral and ground are at the same potential. Non GFCI may not, but they should be the same.

In the first house I bought 1/2 of the neutral and hot wires were backwards. I had another house where almost none or the grounds were actually pinned to ground.

Get a circuit tester to see if circuits are correct.