When a person is ready to ejaculate, his body will be subjected to a series of events.
Will see an increase in the size of the head of the penis, and the head may turn purple. His Cowper gland will secrete a "pre-pile" of fluid that separates from the urethra. His testicles will come closer to his body and will increase in size. (19659002) Just before ejaculation, he will feel contractions in his bleeding, seminal vesicles and prostate, causing semen (ejaculate) to gather in a pool at the base of his penis. He will feel a "pumpkin" feeling. When it is ready to ejaculate, it will feel "pulsating" around its urethra.
The ejaculate will leave its penis at approximately the same speed as a city bus, about 28 miles an hour. But it can reach a speed of 43 miles per hour depending on how long since the last time it came. (Everything is fun and games until somebody gets lost!)
Once he has ejaculated, the scrotum and testicles will return to their normal size. He will have a common sense of relaxation and will experience a refractory period (when he is physically unable to get another erection). This period may range from a few minutes to much longer depending on its age.
Sexual counseling: Unless it is able to return, you can stop it from ejaculating with a firm (but very tender) squeeze at the tip of the penis