36 hours, damn. You meth folks are crazy. 12 hours is a long coke session for me. Usually I like to go 6-8 hours, although my record is around 20. When you start doing coke at 8 pm and you're up at 2 or 3 pm the next day still doing lines, you don't even get high anymore. You're just keeping yourself awake. Can you actually stay high on meth for 36 hours, or 3 or 4 days like some people do?