John Derbyshyre is disgusted, disgusted you see:

GROSSEST PUBLIC SERVICE ANNOUNCEMENT EVER? [John Derbyshire]
After reading about the Bad Sex Prize, you may feel like sampling thisparody of “The Twelve Days of Christmas,” done (apparently) as a public-service announcement to warn against the perils of casual sex. Warning: it is VERY GROSS, though more so visually than aurally.

You can watch the flash animation here.

Below are some screenshots of the “worse” parts [ha ha] — The Corner people are a sensitive bunch.