After orgasm, if left in position, as the male organ softens, and the muscles of the vaginal walls
haven't been stretched, in child birth, for example, at some point, the flacid penis
will be ejected, not with
an audible "snap" as the title would indicate, but with
a reaction not found
in post-parturition vaginas.
The current trend
is for more women to opt for Caesarian Section to avoid
pesky labor and to maintain their "snatchlasticity.