expression, godan verb (-ru)
be upside-down; be inverted
Describes something being physically turned so that the top and bottom are reversed. Often used for objects, clothing, or pictures.
See also: 上下 (うえした)
その絵は上下になっている。
That picture is upside-down.
Tシャツを着たら、上下になって
When I put on the T-shirt, it was upside-down.