Colors, haha... looks like he was right! Anyways, I had my first cigarette pretty young, maybe 9 or 10. Me and my older sis would sneak out behind the shed and smoke my mom's leftover ciggy butts. Never really liked it, but it was fun "rebelling". I just remember being out there one wiinter night, there was snow and it was really beautiful... Such a vivid memory, thinking about it... I later tried smoking as an adult, but it never really caught on. Aside from weed, of course, haha!
Catnip is pretty good, it works for me, I dont get anywhere near high, but it reminds me of the comedown off of some midgrade weed. but it lasts about 30 minutes.
i believe the affect on cats is to do with the smell. i think it acts like a really strong pheromone. they dont need to eat it to enjoy it, so its not a matter of getting them 'intoxicated'. my cat used to get happy and excited and run around.. but not uncoordinated..
whether thats the case or not, it is known to have mild sedative qualities in human and is supposed to not be unpleasant, however that does not necessarily mean its like being high, or even as strong. but it is supposed to have a small buzz. like all herbs for all uses, there are all sorts of different qualities i'm sure, so it probably depends on the individual, the quality, and how its used.