I first watched this on a Saturday night when nothing was on and i wanted to know how bad it really was (i had seen an add with one of them eating puke...)
I was laughing so hard. They were measuring farts. The show is really stupid but a stiff/older person would never watch it. I think the show is like a When-You-Have-Nuthin-Better-To-Watch show. It is pretty rude. The stuff they do is...funny. All in all, its better then renting Jackass, much better....
For teens, this show is great. Being a youth myself, I have found that I've lost countless hours watching this show with my friends and sister. Being the target audience (male teens), I can fairly say that this show does its job, and very well. It is smoth, watchable and above all downright hilarious. However, to anyone out of the target demographic (under 12, over 25ish) Kenny vs Spenny would be deemed disgusting trash.