Spit or Swallow?
To spit or swallow after a man ejaculates in your mouth is an
enticing question that has been hotly debated by both men and women
throughout the ages. Most men report a far greater level of
pleasure when a woman swallows his ejaculate and continues sucking
for another minute or so afterwards. Women who don't like the taste
or texture prefer to spit the ejaculate out afterward. Some women
will even stop sucking at the point of orgasm and finish by
masturbating him with their hands.
Nutritional?
From a nutritional standpoint, there's nothing harmful in the
ejaculate. In fact, it even contains protein. Here's the big list
of what's in your average man's ejaculate: aboutonia, ascorbic
acid, blood-group antigens, calcium, chlorine, cholesterol,
choline, citric acid, creatine, DNA, fructose, glutathione,
hyaluronidase, inositol, lactic acid, magnesium, nirtogen,
phosphorous, potassium, purine, pyrimidine, pyruvic acid, sodium,
sorbitol, spermidine, spermine, urea, uric acid, vitamin B12, zinc.
An average man's ejaculate contains about 15 calories.
The Taste
The taste of ejaculate varies quite a bit from man to man and even
from day to day in each man, depending mostly on what he has eaten
or drunk over the last 24 hours or so. Fish tends to leave a bitter
aftertaste, as does asparagus. Steak, chicken, apples and oranges
have been reported to leave a pleasant taste.
Spit
He's still cumming in your mouth and you still get the full taste,
but you spit it out somewhere afterwards. Some people feel that
having the ejaculate in your mouth is OK as long as you don't have
to swallow it. 
