The phrase is everyday Brazilian Portuguese slang, with bosta used as a vulgar word for something worthless or awful. Clips built around a single fed up line like this spread mainly through soundboards, messaging apps and short video edits, where the language barrier matters less than the tone of voice. Because the recording runs longer than a quick one liner, it is often used when a situation keeps getting worse rather than for a single instant fail, and Portuguese speaking audiences share it as an over the top way to declare that everything has gone wrong.