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1.
1.) To cause a developing fetus in the womb to bleed by an excessive external force, enduced upon the stomach, and cause premature, deadly, birth.

2.) A simple way out of a fun Prom night gone wrong.

3.) A developing fetus punching the mother from inside the womb.

4.) When a chick is giving you head, and right after you blow your load in her mouth, you punch her in the stomach, so it looks like she just came out of the womb.
Yeah, that guy got so wasted last night, when he found out she was pregnant, he had to fetal punch her real good; else that bitch woulda narked!
by Zack Behm and Alex Cohen April 29, 2005