Heh, paranoia as a possible effect of smoking Cannabis goes passed "cops" or "noise." Lots of people get paranoid when they are not used to it, or smoke more than they're used to. Paranoia can be a range of things, like "Oh no, I think my heart is going to stop, call 911." or anything, really. I've had one paranoid high, and I thought my heart was going to stop, or blow up. It was my first time smoking, and the feelings were too overwhelming. It's just a matter of experience. You can talk yourself out of paranoia. I had a slight paranoia a couple weeks ago... thought I was going to pass out, but I talked myself out of it, so I don't consider it a paranoid high. It just takes experience. Also, usually the paranoia can come from sativa strains (the real cerebral head highs).

For anyone out there who gets paranoid, just keep smoking, and you'll learn to control it.