So just a follow up. I went ahead and tried meth. I did get blurry / double vision, so it's interesting that you mention that. It felt a lot like coke, which shouldn't be a surprise since they both increase dopamine. I would describe it as super-coke. You do a line smaller than a coke line and stay high for hours. At the same time, it didn't last 12 hours or any of these ridiculous time frames that I often hear. I re-dosed every 4-6 hours. The worst part for me was teeth grinding. That lasted a whole day after I quit using it. My jaw muscles were so sore and swollen, one side popped when I chewed. I don't think I'll do it again, but at least I can scratch it off my bucket list.