Sudafed's been hard to come by recently, ever since the government figured out that people were making meth out of it. So if you have allergies this season and you can't find any Sudafed, but you can find a bag of meth, here's some instructions on how to synthesize your own pseudoephedrine (the active ingredient in Sudafed) out of good ol' crystal meth. I really shouldn't have to say this, but don't try this at home. (via twentytwowords.com).
