Nice…. GLC covers Manfred Mann’s “Blinded By The Light”. Regarding the “douche” line, Wikipedia tell us:

The Earth Band’s recording of the song features several changed lyrics. The most prominent change is in the chorus, where Springsteen’s “cut loose like a deuce” is replaced with “revved up like a deuce.”

This is commonly misheard as “wrapped up like a douche.” Springsteen himself has joked about the controversy, claiming that it was not until Manfred Mann rewrote the song to be about a “feminine hygiene product” that it became popular.

The more you know.