Sexual Behavior in the Human Female. Views Read View source View history. In stallions , ejaculation is accompanied by a motion of the tail known as "tail flagging". It is normal for the amount of semen to diminish with age. Look up ejaculate in Wiktionary, the free dictionary. Alfred Kinsey measured the distance of ejaculation, in "some hundreds" of men.
Macy. Age: 32.
Once the first contraction has taken place, ejaculation will continue to completion as an involuntary process.
Skyler. Age: 20.
Can You Get Pregnant From Pre-Ejaculate?
Feldman; Richard William Nelson The rate of contractions gradually slows during the orgasm. Current therapy in equine reproduction.