Lyric discussion by Katonitrain 

These lyrics have been running through my mind some and after ages of not getting this, it suddenly sprung to me while I was singing it. Forgive me if you disagree, but from "Banapple Gas" I get a picture of a guy(Cat Stevens) in the 70's who's been introduced to butt sex (Banana(penis)/Apple(apple bottom)) and now he's amusing himself in song about the morality of the act and with the words: sterilized(after bowl motion), certified(it's with a girl), gas(clearly a fart occurring during anal). . . Look I'm sorry if I'm wrong, but c'mon how can't anyone see this imagery? Maybe, I have wandered to some of the same places Cat Steven's wandered to, peace and forgive me for this interpretation, though I feel it's valid.

An error occured.