Can a man's penis carry female eggs from one woman to another by having sex with two different women? No, that's not true: Dr. Kecia Gaither, an OB-GYN and associate professor of clinical obstetrics and gynecology with Cornell Weill Medicine, told Lead Stories that men cannot carry eggs from one woman to another via their penis. Normally, the sperm swims up the vagina to the uterus to fertilize a female egg. The penis does not come in contact with a female egg.
The claim appeared in a Facebook post on June 4, 2022. It reads:
I can't find a source but I know there have been cases where a man has sex with one woman and then goes and have sex with another woman before showering and some of the first woman's eggs are still on his penis. They can implant into the second woman who can carry the first woman's child. It is the same idea as medical egg donors.
This is what the post looked like on Facebook at the time of writing:
(Source: Facebook screenshot taken on Mon Jun 6 16:05:03 2022 UTC)
The creator of this post does not cite any sources for this claim.
Lead Stories emailed Dr. Kecia Gaither, a medical doctor who is double board-certified in OB-GYN and maternal fetal medicine. On June 6, 2022, she emailed us:
No the claim is inaccurate
Woman have ovaries (internal organs) which produce eggs
Fertilization is an internal process occurring in the woman's body
Men cannot carry eggs from one woman on his penis to give to another woman