It means to go pooping in the bush. This phrase is made of Latvian and Russian slang.

Origins of the phrase:
It came from a high school girl who told a story about her witnessing a man shitting in the bushes.

Synonyms: padirst krūmiņos ( Latvian ), посрать в кустах ( Russian), shitting in a bush ( English).
" Vīrietis aizgāja pasrat kustos."
" The man went pasrat kustos! "
by Olive095 December 1, 2021
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