Post micturition dribble.
I expect you're wondering what on earth that is.
Well, the first time I became aware of it was many years ago when I used to look after my young nephew for the weekend.
He would have been about nine or ten and invariably wore a pair of those grey marl jogging bottoms, which were as common as shellsuits in those days.
He would come back from the toilet and a small, but very noticeable, wet patch would appear on the front of his pants.
I used to chide him for not finishing the job properly because he was too busy rushing to get back to the cartoons on TV.
But he swore blind that he had 'given it a good shake' before putting it away.
Through the research that I have been doing into Kegel and pelvic floor exercises, I now understand the medical condition behind what became an embarrassing occurrence on a regular basis as he got older.
Post micturition dribble or PMD is the involuntary loss of urine a short while after the main event has been completed and should not be confused with the little spurt that occurs a few seconds after the main stream has finished.
This, and more serious forms of incontinence, can occur as a result of prostate surgery and neurological damage.
But, by far the most common and most easily prevented cause is the weakening of the pelvic floor due to lack of exercise.
The bulbospongiosus muscle (formerly known as the bulbocavernosus) is one of the muscles of the perineum and is involved in erection, ejaculation and urination.
During the greater part of micturition, its fibres are relaxed but, at the end of the process, it comes into action to help to force the contents of the urethra to empty.
If it malfunctions, a small amount of urine remains unvoided - an accident waiting to happen, the moment that you start moving.
Because this one muscle is involved in both sexual and urinary functions, research is being compiled to discover if suffering with post micturition drip naturally predisposes the sufferer towards problems with maintaining erection and successful ejaculation.
In order to completely empty the urethral canal, the sufferer should forcefully suck up his pelvic floor two or three times immediately after he has finished emptying his bladder.
In Kegel and pelvic floor exercises for men, it is this bulbospongiosus muscle that is more important than the pubococcygeus and it needs to be retrained for both endurance and strength.
The former can be achieved by gently lifting, squeezing and then lowering the pelvic floor whilst walking but the latter involves isolating the bulbospongiosus from the pubococcygeus.
This is most easily done by lying down comfortably on your back in a semi-supine position, with your knees bent and feet flat on the floor.
Place your fingertips on the perineum (the flat space that lies between your scrotum and your anus).
Without moving your legs or tightening your belly or butt, lightly suck in your pelvic floor muscles so that your fingertips can feel movement.
You should be able to breathe easily and will probably find it easiest to contract on the out breath at first.
Once you have mastered this, you can try a longer contraction, checking that you can maintain relaxation in the other muscles.
You should aim to hold this contraction for ten seconds three times in the morning and again in the evening.
Don't forget to breathe slowly and deeply.