Top definition
When a man attempts to have vaginal sex with a woman as she is giving birth. The thrusting motion must be enough to combat the birthing process until climax is reached.
The unstoppable force met the immovable object.

Dude I was about to finish the child piledriver until the doctors pulled me off of her
by Kraitogyn December 10, 2012
Get the mug
Get a Child Piledriver mug for your barber Riley.