Why does it happen?
Ejaculation happens when semen is pushed forward along the channel. When the opening is set further back, the channel does not have the length needed for that forward push; semen cannot be expelled with enough force and partly leaks out.
- If the channel is widened (a diverticulum), semen collects there and dribbling occurs after ejaculation. If there is a stricture, the forward push meets resistance.

