up·side down /ˈʌpˌsaɪdˈdaʊn/
1. The upper side; the part that is uppermost.
To be upsides with, to be even with. [Prov. Eng. & Scot.] --Sir W. Scott. --T. Hughes.
These that have turned the world upside down are come hither also. --Acts xvii. 6.
adv : in an inverted manner; "the box was lying on the floor