人仰马翻

rén yǎng mǎ fān

to suffer a crushing defeat (idiom)

in a pitiful state; in a complete mess; to roll (with laughter)

rén

person; people

yǎng

to face upward

abbr. for Malaysia 馬來西亞|马来西亚[Ma3 lai2 xi1 ya4]

fān

variant of 翻[fan1]