The original quote is grammatically correct, unlike the one you copied. It also uses the word 'shit' for 'stuff.'

My point stands, attribution matters.

And if you don't know the source, the convention is to simply add Anon { short for Anonymous } or Unknown at the end or the passage.

absolutely agree

people keep giving ludicrous advice even when nobody asks them

but when you're adult it's not such a big problem as it woud be for a child