The medical term for this is post-micturition dribbling. It occurs when the muscles surrounding the urethra don't squeeze hard enough for it to empty completely, leaving a small pool of urine at a dip in the urethra behind the base of the penis. Within a few minutes, the urine dribbles out.
Try these approaches to avoid wet and stained trousers due to dribbling of urine:
- Practice pelvic floor exercises to increase muscle strength.
- "Milk out" the last few drops of urine. Using the fingertips of one hand, start about an inch behind your scrotum, and gently press upward. Keep applying this pressure as you move your fingers toward the base of the penis under the scrotum. Repeat. This maneuver should move the pooled urine into the penis, where you can shake out the last few drops. With practice, you should be able to do this quickly and unobtrusively.