I honestly think....

that the impregnanting lesbians thing was just to keep the audience awake. to give it a little spice, because between that and the whole whistle-blowing thing, it seemed like two different movies. i thought the whistle-blowing aspect was good enough for the movie, but i guess spike wanted to keep all the horny freaks interested so he threw in some breasts and some thrusting and animated sperm.

~If you want it, I got it, If I ain't got it, I'ma get it, so get it while the gettin's good~