Together: You never should look at your mother's b**bies No matter how big and round they are You'll end up seeing something you don't wanna It's guaranteed to leave a mental scar You never should look at your daddy's penis When he's walkin' down the hall on Sunday morn An acorn in a nest of twigs And underneath two fetal pigs It'll make you wish you weren't even born Parents are gross, parents are gross... (Peter drops his pick into the sound hole) Quagmire: Parents are gross, parents are gross...