Everyone is right ... lol ... nicotine can enhance the effects of cannabis, but generally only in non-cigarette smokers - smokers have a fairly consistant level of nicotene running through their systems, so the impact is negligable.... one word of warning tho - most people who toke the occasional J and don't smoke cigarettes take much deeper drags - this means you are taking in a lot more tar in 1 ciggie than a smoker would in 2 or 3....