If something is inside out, it has the usual inside part on the outside and the usual outside part on the inside.

She had her sweater on inside out. 她把羊毛衫穿反了。

The sea cucumber, when frightened, spits its stomach out of its mouth like it is trying to turn itself inside out.

He told us to turn our pockets inside out and put everything on the table.

You can keep jackets tidy by turning one side inside out and folding it into the other half.

Make sure that you wash new jeans inside out.

See also: inside adverb