Question, for the female. If the vagina of female reproductive system is roughly 4 inch long, at the and of the vagina there is a cervix canal which is not bigger later a straw, and i understand, that vagina have propensity to stretch both ways, but if it stretch and penis can not get inside of cervix canal, when penis inside the vagina it should push some others organs away so vagina can stretch. Is nearby any one can explain how its work? Because i do not understand how some girls and why looking and asking for7, 8, 9, and 10 inches penis, another coming question. If the G spot give or take a few 1.5 to 2 inches inside the vagina, why do female care almost penis size?
Answers:   

Contraceptive pill ask..? Help?

The penis does not go into the cervix. The cervix prevents sperm from getting into the uterus until after ovulation. It is filled beside mucus. After ovulation thin channels of the mucus become gooey like, allowing the sperm to swim through. These thin channel are called meuson channels.

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