One of the best songs in the world. Written by Ray Davies and recorded by his band The Kinks (which is the most underrated band in the world, by the way). It was first released as a single on May 5 1967 and later appeared as the closing track on their album "Something Else by the Kinks".
If you haven't heard it you've missed one of the milestones in popular music.
When you pick up a drunk pregnant woman and take her to an alley and fuck her in the ass. Just as you are about to cum you put your hands over her vagina hence creating a vacuum in her vagina. The instant before you bust you release your hand causing her water to burst, the baby to be born and you to ejaculate upon it simultaneously. Then you stab her and raise the baby as your own.