2nd puberty
Verb: the act of switching sex during adulthood
Chapter 1
by
Aphro
History: In 2006 a massive field of Miasma mushrooms was burned in the Amazon by a paving company. Strangely, every member of the crew from the ages of 19-26 mysteriously turned into women. This event shocked the world and baffled scientists, eventually these scientists figured out that by burning the Miasma mushrooms the gender swapping spores were sent into the atmosphere. The good news was because of the dispersal the effects would be lessened, the bad news was that now every man on earth from 19-26 could now by affected by a phenomenon called second puberty.
Process: on average men across the globe have a 5% chance of developing Second puberty. (with the exception of men from South America where it is 10%) When these changes occur they can be seperated into 4 distinct stages
Stage 1: In the initial stage men are plagued by an **** amount of horniness. Refractory periods between orgasm is removed and the production of semen is increased massively. Colloquially this stage is called ‘Your dick’s final send off’ as after this 2-3 day period your penis will never be erect again
Stage 2: in this period the chest begins to puff up and become sensitive. The skin will begin to smoothen and the hair will grow. The body and face will slowly mold itself into a more feminine shape. Orgasm is impossible in this form but arousal will remain. The balls will recede and disintegrate inside the body, and the voice will become androgynous
Stage 3: breasts will begin to form, second puberty girls (SPGs) will tend to have larger breasts on average, so breasts will be noticeable and cleavage will begin to develop, the same principle extends to the hips and butt. The face will be noticably feminine but semi-boyish. The lips and tongue will grow and become sensitive, this will be unnoticeable unless aroused. The penis will ooze semenless pre-cum when aroused and be even more (yes even more) sensitive than before however still be unable to orgasm. The transition between womb and prostate will occur around this time.
Stage 4 the transformation will begin to level off and the subject will become indistinguishable from a normal woman. Around this time the subjects mind will be flooded with hormones making any hornyness accumulated from the previous two stages almost unbearable. An extremely sensitive crease will begin to appear directly below the former penis. Eventually (usually in the middle of the night, the crease will open, creating a brand new vsgina and returning the subjects ability to orgasm. This is colloquially called the calibration phase as any sexual hang ups will mostly be cleared by the time, usually by waking up in the bed of a random man immediately after the physical transformation is finished
Other points: unprotected sex with an SPG will increase the chances of developing SP will roughly increase by 5% with every sexual act. Being the child of an SP mother will raise your chances to 15%. The process shown above is not 100% uniform and there exist different strains of the infection, however this is the most common one. SPG’s do not have periods or contract STD’s their rate of fertility is also much lower
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The world
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A world where people swap genders during adulthood
- Tags
- Squirt, Vintage, Goth, Bisexual, Deepthroat, Rough sex, Latinas, Gender bender, World-building, Transformation, Car sex, Free-Use, BBC, Masturbation
Updated on May 23, 2026
by Aphro
Created on May 11, 2026
by Aphro
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