Imo, the whole herb laced with other things is 99% Urban Legend, although it does happen, (monkey paw...which is laced with PCP, not enbalming fluid like I've heard a lot). Maybe informing your parents to read up on the REAL facts about marijuana, get them the real info that MJ is overall a harmless recreational activity. Lots of websites and books. Sounds like your parents concerns are valid, but based on misinformation and folklore. Good Luck...and keep toking!!!:stoned: