There are 3 fact in this old jingle.
Comet, it makes your teeth turn green,
Comet, it tastes like gasoline.
Comet, it makes you vomit,
So get some Comet and vomit today!
“Look how green it is! It’s pure!”
GMTA.
I always wondered how back in the days when we were growing up, without social media, those songs spread amongst schoolkids.