How does a vagina cause a penis to ejaculate?
All of us that have had sex or will have sex take this for granted but have we ever asked ourselves what is in a vagina that makes men ejaculate? Do all vaginas cause a man to ejaculate or maybe some do help a guy cum faster than others. My theory is the rugae or ridges inside the vagina but I am not a gynecologist but curious to know if I am on the right track.













