Male puberty is different from female puberty in many ways. Unlike ovulation, which occurs late in female puberty, spermatogenesis and ejaculation occur early in male puberty; ejaculation may even precede secondary sexual characteristics such as body hair and voice changes. Some boys become capable of impregnating a female even while appearing sexually immature (Lancaster, 1986). Boys’ voices change more drastically than girls’, and their growth spurts tend to be more extreme and dramatic, usually accompanied by an increase in appetite. Because boys’ pubertal growth tends to be more uneven and sporadic than girls’, the adolescent boy will often appear gangly or awkward. As a boy’s testicles begin to increase their production of testosterone, his scrotum darkens and the testes and penis enlarge. As puberty progresses, pubic hair appears, the larynx enlarges, bones grow, and the frame takes on a more adult appearance.
For the most part, early development in boys is usually not as embarrassing as it is in girls; a larger penis may be a symbol of status, and beginning to shave may be seen as a sign of maturity and adulthood. However, adolescent boys do experience frequent spontaneous erections, which may have no association with sexuality but are nonetheless quite embarrassing. Their increased sexual desire is released through nocturnal ^nocturnal emission emissions and increased masturbation. Involuntary ejaculation during sleep, also
referred to as a "wet dream."