The song has double meaning. First off, it's an extended retelling of an advertisement for Charles Atlas' Dynamic Tension device, which was mainly shown on the back of several comic books in the 1940s on up. There were four ads, but the one the song mainly retells is the one called "The Insult that Made a Man out of Mac." The Dynamic Tension is actually mentioned in the song.
The other meaning, which is more obvious, is Frank's sexual infatuation with not just bodybuilding, but his latest creation, Rocky Horror.
The song has double meaning. First off, it's an extended retelling of an advertisement for Charles Atlas' Dynamic Tension device, which was mainly shown on the back of several comic books in the 1940s on up. There were four ads, but the one the song mainly retells is the one called "The Insult that Made a Man out of Mac." The Dynamic Tension is actually mentioned in the song.
The other meaning, which is more obvious, is Frank's sexual infatuation with not just bodybuilding, but his latest creation, Rocky Horror.