What is the meaningof "a wearer knows where the shoe pintches"?

Question

What is the meaningof "a wearer knows where the shoe pintches"?

Answer 1

Looking at a shoe won't tell you what wearing it will.

Answer 2

it means that only the person who's wearing the shoe knows where it hurts. it like the customer kows the best they know whats right for them .  

Answer 3

It means that the person in a situation will know the best.

The onlooker may just get the picture but not Feel it.

Illustration: He can tell that a person is uncomfortable wearing shoes but not fully comprehend where the pain lies.

It’s the same as telling someone to get into someone else’s shoes to feel what the ‘Wearer’s’ actually going through.

Answer 4

People outside a relationship can never really know the details and problems that a couple may have