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This might have been asked before, but is there a way to filter/find vids where the girls actually drink piss and not just have it go in their mouth but they just let it pour out? It can be hard to tell from just watching the trailers, especially when the descriptions are often misleading. Thank you!

That would be a great idea to add an additional filter for actual drinking/swallowing as many of the pissing scenes the girls mouth gets filled and it just runs out, nothing is really swallowed.

It isn't the problem of a missing filter.
Problem is studios tagging their scenes wrong.
There is a tag call "piss drinking" and it should be used only on scenes where the girl really drinks.