Refers to the physical position being reversed, not correct orientation.

Literal Meaning

Mixing up dressed correctly and 'back to front' can cause embarrassment.

Common Mix-ups

Sometimes used to describe misunderstanding or confusion beyond clothing.

Implies profound knowledge of something, can find anything easily.

Suggests a lot of time and hard work have gone into learning something.

Used metaphorically and does not mean physically reversing front and back.