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1.
v: the act of having sex with a pregnant woman.

It is believed by many that by having sex with a well-endowed man, or having violently long sex will lead to the poking of the fetus.
Guy 1: Dude, I banged the preggers chick next door last night.

Guy2: Bro, not cool. Baby poking is grody.
by Sergee February 18, 2009