A prolonged foreskin definitely leads to premature ejaculation, because if the foreskin is too long, it constantly covers the glans, which generally does not get exposed. As a result, the glans receives less external stimulation and becomes more sensitive. Therefore, during sexual activity, as the penis erects and the glans is exposed and comes into contact with a partner’s body, its heightened sensitivity can lead to premature ejaculation. Thus, an elongated foreskin certainly causes premature ejaculation.