Gail and Dale's other hit -- "Makin' Porn for Jesus".
BTW, when I was a kid my grandmother sent me a signed photo of Myron Floren (that guy with the accordion, for you young folks who weren't force-fed this crap as kids...). I love his coughing intro to this song. You couldn't parody that.
They may have in fact known what a toke was. I went to high school back east with a group of 5 sisters that ended up on the Lawrence Welk show, and although they were billed as this wholesome, goody goody family act, they were in fact the biggest bunch of slutty party animals ever! Ah, memories!