In a man, ejaculation is what happens when semen shoots out of the end of the penis. Slang terms for ejaculation are "blowing a load" or "blowing a wad", "busting a nut", "creaming", "cumming", "jizzing", "jazzing", "spurting", "squirting" and "skeeting". Ejaculation takes place when the man has an orgasm (the height of sexual excitement), usually after his genitals have been physically stimulated in some way. However, ejaculation can also happen if a man has not been touched, for instance if he becomes aroused or stimulated (made sexually excited) by looking at sexy pictures, watching sexy videos, or thinking about sex. When a man ejaculates while sleeping, it is called nocturnal emission.
Before a man can ejaculate, his penis needs to be stimulated. The penis is usually soft, quite short and hangs down. When a man is stimulated, for example by seeing another naked person, masturbating or being touched by someone else sexually, the inside of his penis fills with blood. This causes it to become longer, thicker, harder and to stand upright, and is called having an erection. Men can be stimulated for different amounts of time before they ejaculate.
Ejaculation takes place in two stages.
After a man has ejaculated, his penis usually becomes soft and shorter again. He may also have an enjoyable and relaxing feeling in his groin area. It takes some time before he can have another erection and ejaculation. This time is called the refractory period. The average refractory period is about half an hour. Younger men normally have a shorter refractory period than older men. Men who are 18 years old have a refractory period of about 15 minutes, while men in their 70s have one of about 20 hours. Some men's penises remain hard after one ejaculation, and they are able to have another ejaculation after some time without losing their erection. Most young and middle-aged men can probably have about two to three ejaculations in a few hours, but it has been said that some men are able to have up to nine ejaculations a day.
When a man ejaculates before he wants to, this is called premature ejaculation. If a man cannot ejaculate after having been aroused for a long time, even though he wants to, this is called delayed ejaculation or anorgasmia. A man who is unable to ejaculate at all is said to have anejaculation. Some men are able to have an orgasm without ejaculating. This is called a dry orgasm.
Apart from giving a man pleasure, ejaculation may help a man stay healthy. A study carried out in Australia seemed to show that men who ejaculate often have less chance of getting prostate cancer.
Semen is known informally as "cum", "jism" or "jizz". Men ejaculate different amounts of semen. Normally, an ejaculation makes between 1.5 and 5 millilitres (up to one teaspoonful) of semen. More semen tends to come out if a man has not ejaculated for many days, or if he has been stimulated for a long time. Older men produce less semen. If a man ejaculates an unusually small amount of semen, this is a medical condition called hypospermia.
Semen is usually a white or yellowish fluid. It starts off being slightly thick and sticky, then after a while it becomes more watery. Semen contains many chemicals. These include citric acid, fructose (a type of sugar), enzymes that speed up chemical reactions in the body, lipids (substances that fat is made of), and slippery fluids that help the semen to move through the urethra.
The number of sperm in an ejaculation of semen depends on many things. There may be more sperm if:
If there are an unusually low number of sperm in an ejaculation, this is called oligospermia. If there are no sperm at all, this is called azoospermia. A man with oligospermia or azoospermia is usually infertile, and cannot or finds it very hard to make a woman pregnant by having sex with her.
If a man has a sexually transmitted infection or STI (an infection that is passed from one person to another by sex), the germs that cause the disease can appear in his semen. If the person that the man has sex with touches the semen, he or she can become infected by the germs and pick up the disease. AIDS, gonorrhea, hepatitis B, herpes and syphillis are examples of STIs. One of the ways for a man to lower the chance of passing on an STI to his sexual partner is to wear a condom on his penis when having sex.
When a man has sexual intercourse with a woman, he places his penis within her vagina and moves his penis back and forth, typically in a thrusting motion, while the woman moves her hips. The vagina is warm and somewhat moist, and it places pressure on the man's penis. These sensations, combined with the friction caused by the in-and-out movements, stimulates the penis, which causes the man to have an orgasm and to ejaculate. If the woman is using birth control this will usually not cause her to become pregnant. Otherwise, the sperm in the semen can travel into the woman's uterus and Fallopian tubes. If there happens to be an ovum or egg cell in a Fallopian tube, a sperm may fuse with the ovum. This is called fertilization, and makes the woman pregnant.
However, before a man ejaculates, a clear, colourless, sticky fluid called pre-ejaculate (also known as pre-ejaculate fluid or informally as pre-cum) can come out of his penis. Pre-ejaculate is produced by the bulbourethral or Cowper's glands. Some tests have shown that pre-ejaculate does not contain any sperm. However, some sperm may have been left behind in the urethra from an earlier ejaculation and the pre-ejaculate may carry this sperm out of the penis. That is why a woman can become pregnant even if the man pulls his penis out of her vagina before he ejaculates. Also, if a man ejaculates near the woman's vagina and semen falls on her body, sperm can accidentally enter the vagina and cause a pregnancy. To avoid the woman becoming pregnant when she does not want to, the man and the woman can use methods of contraception or birth control. For example, the man can wear a condom on his penis, or the woman can take birth control pills.
Young boys cannot ejaculate. A boy's first ejaculation usually happens about one year after he begins puberty, which is when his body starts changing into a man's body. Most boys go through puberty in their teens. The first time a boy ejaculates usually happens when he is asleep. This is called a nocturnal emission (which means "an emission happening at night") or a wet dream. It happens without the boy's control, often when he is having a dream about sex. Scientists believe that wet dreams are the body's way of removing too much semen. When a boy begins masturbating, wet dreams usually stop happening.
When a boy starts to ejaculate, he usually produces only a small amount of semen. The semen is different from what an adult man produces. It is usually clear and stays sticky. It either has no sperm in it, or sperm that do not move properly or do not move at all. A boy's semen only becomes like an adult man's semen about two years after his first ejaculation.
Team
A team is a group of people who have a certain task to complete. In order to meet their target, the members of the group must work well with each other.
Successful team - a group of people who tend to meet their target despite barriers. The group members cooperate with each other and take other members' ideas into consideration.
Unsuccessful team - a group of people who have a very difficult time when attempting to complete a certain task. This may be because the members of the group think of only themselves and create an uncomfortable environment for other members of the team.
Hirohito
The name "Shōwa" was given to Hirohito after he died. Emperors of Japan are normally renamed in this way; and people started using the new name in 1990. During his long reign, many people outside Japan call him Emperor Hirohito, or just Hirohito.
Prince Hirohito was named regent for his father in 1921. he became emperor after his father's death.