> It literally means 'regular person test'...

The whole point is that it doesn't mean "regular person test'...

It means "person who isn't the target customer and who probably cares about you too much to give unbiased feedback" test.

Who are you calling a regular person? As if other people aren’t regular? How dare you. /s

If somebody wants to be offended by combinations of words, no combination of words will deter them.

Honestly, neither "mom test", "dad test", or "regular person test" gives me any idea whatsoever what this might be about.