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Boys start producing sperm in their semen once they have started puberty. It may take a while for the production to begin but it will have by the time puberty has ended.

At first masturbation will produce a small amount of clear watery sticky fluid on ejaculation, this will be the Semen. As he gets further into puberty this will change into a thicker whiter/creamy fluid which the sperm is transported in.

Boys bodies do not begin to produce sperm until they have begun puberty. The age at which boys begin puberty is very variable and differs from one boy to another. Any age between around 9 years of age and 16 is considered to be within the normal range for puberty to start although on average most boys begin puberty around 11 or 12 years of age. They generally begin to produce sperm around a year after puberty has begun.

Immature germ cells (spermatogonia) are dormant in the boys testes from fetal life. They do not divide and mature into sperm until Puberty has begun. Sperm will not be able to be ejaculated through masturbation until a boy is underway into puberty.

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12y ago
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14y ago

During puberty - this usually happens between the ages of 13-15.

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13y ago

While going through puberty boys start producing sperm.

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12y ago

According to David Hormander at Harvard Medical Studies kids can produce semen as early as 23 years old. Anyone producing sperm before this age has a chance of having testicular cancer.

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13y ago

Chase their chods are satisfied with the porn they watched.

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11y ago

11 to 12

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Q: When does a boy know they have sperm?
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