Rapid ejaculation is a sexual condition which causes men to ejaculate more quickly than usual. Rapid ejaculation may occur before or during penetration, either through direct or indirect stimulation of the penis, or sometimes through no stimulation at all. The condition is very common among men, with some studies suggesting it impacts up to 40% of males at some point in their lives.
Rapid ejaculation is sometimes called 'premature ejaculation,' although the term 'rapid ejaculation' is preferred by many medical practitioners. It is often shortened to the acronym RE.