An insult directed at jerks and assholes. It is similar in definition and used in the same context as motherfucker, with the only key difference being that when calling one a Fetusfucker, you are implying that they fuck fetuses, rather than someone's mother.
"Which one of you Fetusfuckers fucked my girlfriend and gave her Anal Warts?"
by Jolly Judd January 29, 2009
A man who is turned on by pregnant women or one who has sexual intercourse with a woman during the last months of her pregnancy. Fetus fuckers are known to be the leading cause of dimples in children.
Roberto is such a fetus fucker.
by Blenderhead71 February 09, 2007