I know you guys can't know 100% but I will describe my experience. I knew it was not mdma as my tester had no reaction. Since I have had such a hard time getting real stuff recently, I decided to see what all the negative stuff about pipes was all about. I wish I never decided to do that. I started feeling it about an hour in. Not euphoria, happiness or anything. In fact I felt like I wanted to just go in a corner and be by myself. I went from being cold to hot. Went from feeling slighty messed up to really tripping. Lights and colors were brighter and seem to have a glow. I felt like I was on shrooms or lsd. I am thinking it was probably a bzp tfmpp combo. I can't see how anyone can actually like this stuff. Especially if your looking for the real deal. If someone thinks these pipes are the real deal and don't test them and double drop, I can easily see an emergency room visit in their near future. It's one thing for pressers to want to make an extra few bucks selling these, but these are really going to kill someone, and thats not a good way to retain customers.