turn upside down

US /tɜːrn ˌʌpsaɪd ˈdaʊn/
UK /tɜːrn ˌʌpsaɪd ˈdaʊn/
"turn upside down" picture
1.

to invert or flip something so that the top is at the bottom

:
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He accidentally turned the box upside down, spilling all its contents.
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The strong winds turned the umbrella upside down.
:
invertflip overoverturnupend
2.

to cause great disorder or confusion; to disrupt completely

:
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The new policy turned the entire department upside down.
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The unexpected news turned her world upside down.
:
disruptdisorganizeoverturnthrow into disarraywreak havoc
:
upside-down caketurn downturnturningturn onturn toturn in