Ok, I'm trying to phrase this so that it isn't a powder ID thread (as I know that is against the rules), but I found this powdery substance in my sister's room in a paper wrap and I'm pretty sure it's heroin. I tasted it and it's bitter like coke, but has more of a papery taste, and it is also about as white as the paper. My sister doesn't live here anymore, but she's had a problem with both. Plus, she's done ketamine and speed before, so it could potentially be either of those.
The rules say that trying to ID it is just speculation, but any tips would be appreciated.
My real question is, if it is heroine, can I blow it just this once so long as I have nothing to do tomorrow, and would it be fun/ worth it?