Female cul-de-sac

The extended area inside a woman’s vagina where larger penis’ have stretched out an area around the cervix. The void area deep inside a woman’s vagina, where the bottom has become difficult to reach.

My large cock found a home in her female cul-de-sac. I knew my wife had taken a lover when she had suddenly developed a female cul-de-sac. I can’t hit bottom in women with large female cul-de-sac.