ive never OD'ed myself but once when I was a retard I was like to this girl "hey try this weed stuff, its JUST like weed!". I accidentally gave her a HUGE rip of JWH 018 and within a few minutes her hands are over her hand and she's crying. we dragged her to the bathroom and for 2 hours she was dry heaving in the toilet.
Sadly enough, I can relate to this. Experiences like this can easily ruin recreational drug use forever. No joke. It is NEVER a good idea to take a large or an unmeasured dose of a chemical you're not familiar with.
i posted my od experience with jwh a few days ago....and i have been smoking pot since i was 12...i live in co and have a medical pot card....jwh(spice) and weed tolerance are different things