My gf sent me a message "My sister is showing me a sh*t."
Is that a correct way to write a sentence that doesn't talk about fecal matter? It stood out as weird to me, but I don't know the official reasons/rules why.
English is second language for both of us and we don't share the first langauge.
If I had to write the sentence from what she later explained to me she meant, that there's some specific unimportant thing on youtube that her sister is showing her, I'd say "My sister is showing me [some] sh*t.", but never with "a"
I'm sorry if questions about vulgarisms aren't allowed here, I didn't see anything in the rules. I censored it, if it's unnecesarry feel free to edit the stars out