BWAHAHAHA!! I've got a similar problem when I get together with my bandmembers to practice...when I sing my reworked lyrics, it throws them off becuz they start laughing, so I have to sing the originals to keep time and I have to have the original lyrics right in front me 'cuz my lyrics have pushed the originals outta my noggin.
The Trials and Travails of a Parodyist, I reckon...
LOL and FReegards...MUD
Parodyism is a disease with no known cure.