skíta upp á bak

Literally "to shit up onto one's back". Skíta á sig (“to shit in one's pants”) may be used to refer to making a blunder. This phrase takes that analogy further and describes having such an extremely explosive shit (i.e. a blunder) that the fecal matter ends up on one's back.

skíta upp á bak

1. (vulgar, colloquial) to do absolutely horribly; to fail horribly; to make a terrible and embarrassing mistake

   Ég skeit upp á bak í þessu prófi. ― I did absolutely terrible on this test.

   Borgarstjórn skeit upp á bak með því að fara ekki strax í framkvæmdir. ― The city council made an absolutely terrible mistake by not executing the projects immediately.

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