Retrograde ejaculation is a condition where, on orgasm, semen is
misdirected into the bladder rather than out through the urethra.
Erection and orgasm occur as normal, but little or no ejaculate is seen.
If the urine appears cloudy after orgasm without visible ejaculate being
present, it is a good indicator that retrograde ejaculation may be taking
place.
There are two sphincters which close off the urethra; one where it exits the
bladder and one where it exits the prostate and enters the penis.
In a normal ejaculation, the sphincter at the exit from the bladder
closes on orgasm while the one at the exit of the prostate opens, directing
the semen out of the penis through the urethra. If this doesn't happen
correctly (for instance if the sphincter at the exit from the bladder doesn't
close completely or is damaged) then the ejaculate can go backwards
into the bladder rather than out through the penis.
Some of the causes of these sphincters not functioning correctly are:
Unless you wish to father a child, retrograde ejaculation poses no
problems (except the sadness some people may feel at being unable to
ejaculate normally) If you are trying to start a pregnancy, it is possible for
sperm to be harvested from your bladder after orgasm.
Haystack... You say it doesn't feel as good? That's not what I've heard. I'm interested. Please inform me :)