Penis captivus is a rare occurrence in intercourse when the muscles in the vagina clamp down on the penis much more firmly than usual, making it impossible for the penis to withdraw from the vagina. (Wikipedia)
Hildebrandt’s (a German gynecologist in the 19th century) had a patient had been married for about a year. Sexual intercourse with her husband had always been painless until one particular evening. Hildebrandt gives the husband’s account of what happened:
He reported that just at the moment when he thought intercourse, which had been quite normal till then, had come to an end, he suddenly felt that he, or rather his glans, was held back deep in the vagina, tightly gripped and imprisoned, while his whole penis was in the vagina. All attempts at withdrawal failed. When he forced the attempts, he caused severe pain to himself and his wife. Bathed in perspiration through agitation, alarm and his failure to free himself, he was finally forced to resign himself to waiting in patience. He could not say how many minutes this lasted, his imprisonment seemed endless. Then — the hindrance vanished on its own; he was free.
In recent times, there has been news of a couple who got a little too hot and heavy while taking an ocean dip, getting became stuck together during sex.
The Italian couple reportedly took advantage of a deserted beach and decided to spice things up in the water, reports Italian newspaper Il Mattino.
However when they tried to end the passionate embrace they realized their genitals were stuck together.
Il Mattino reported that the man was “unable to extricate himself from the woman due to suction”.
Luckily for the couple a woman walking along the beach came to their rescue, handing them a towel as they tried to maneuver from the water to the sand while still stuck together.
The pair were taken to hospital and eventually freed when a doctor administered an injection to dilate the woman’s uterus. (news.com.au)
So yea, its actually possible to get stuck during sex. I guess that’s what Nigerians in the West refer to as ‘Magun’