What is Upside down ?
Upside down is adv 1. with the top underneath Don’t turn the box upside down – all the papers will fall out. The car shot off the road and ended up up- side down in a ditch. Bats were hanging upside down from the branches. 2. in disor- der While he was out someone had ran- sacked his room, turning the place upside down.
source: Easier English, Student Dictionary Upper Intermediate Level