Q: Why is pee yellow and sperm white?
480808
that is a old joke ..so you'll know if you're coming or going
414724
It is very very highly rare when more than one sperm enters into the egg. There are several mechanisms to prevent it from occurring. \n\nIf it were to happen, the zygote would have an abnormal chromosome number and most likely would not make it through gestation.\n\nSperm is white because the proteins that make it up reflect all the visible wavelengths back to your eye.
284930
Just vaginal discharge, it's normal. \n\nUnless it's yellow, excessive or smells unusual/bad you shouldn't be worried about it.  Talk to your Dr. if you are concerned about it.
826973
Consistency of semen isn't very consistent; you've probably noticed that the thickness of your ejaculate can vary from day to day. This is because the quality of the fluid is very susceptible to a number of factors. Diet, exercise and frequency of sex can all dictate how thick or watery your emissions are, as can the tightness of the clothes that you wear (tight clothing will increase body temperature and can thus impact sperm motility. \n\nFor men of normal fertility, sperm creation is a constant, ongoing process. Millions of sperm cells are created each day in the testes; they mature in one to 3 months, after which they're ready to be ejaculated. So, since there are always sperm cells being made, there is a lot of overlap between your "loads." Once one has been released, another should not be far behind.\nActual semen quantity differs among individuals and can also change for the same individual during different times of his life. Genetics plays an important part in how much a male will ejaculate. Most males ejaculate about one teaspoon of semen. Some medications may affect the amount of semen produced. And you will notice that the longer you take between orgasms the larger the quantity of semen you will ejaculate. (You've probably noticed that if you masturbate more than once a day that the second, third or fourth time you achieve orgasm you release smaller and smaller quanitities of semen. Wait overnight and see how much more your body made while you were asleep.) Additionally, the more aroused you get and the longer you take to ejaculate, the more semen your body will produce. Foreplay — touching yourself in special ways in special places — will sometimes stimulate the body to produce more semen, since the body's reproductive glands (such as the prostate) work harder when you're aroused.\nSemen appearance and texture can change naturally over the course of months, days, or even from one ejaculation to another, due to a variety of factors inculding diet.\nSemen from a mature male is usually a milky or pearly-white color. It is not uncommon to see a yellowish tint to the semen if you've abstained from ejaculation for a while. Semen colored with red streaks may signify blood. If you occasionally see a bit of blood it's not necessarily a cause for alarm, but if you see a lot of it, or if it persists, the condition should be brought to the attention of your physician. The same goes any other drastic color changes, which may indicate infection. \nA lot of factors go into the appearance and consistency of semen, including diet, ejaculation frequency, etc., so changing any of these can alter the way your semen looks. Also, it's easy to think that semen is simply sperm cells in water, but it's a much more complex substance than that. So it may have been the absence or presence of something other than actual sperm cells — such as sugars or proteins — that caused your semen to look different before.\nA nocturnal ejaculation may have more prostatic fluid in it (which is whiter and thicker), while a daytime ejaculation may have more sperm and fluid from the seminal vesicles, which tends to be more clear and less viscous.
672398
This is normal and I would not worry.  The clear part is the seminal fluid the white swirls are the sperm.
218687
Normal semen is light gray-white, not creamy, green, yellow or red; those colors might suggest infection. However, people's perceptions of subtle colors can be quite variable, so I don't know if you have anything wrong. \nTime play have no meaning towards semen!\nHyperviscosity and density of seemen is another important factor depending by the good functionality of male reproductive organs. In fact, on such case a number of sperm orient themselves tail-to-tail or head-to-head instead of swimming in a straight line. This clumping is another problem for the fertility. This finding may could indicate a problem with sperm antibodies or the presence of a bacterial infection again.
1040023
Biologically, no.  Mucsles will "pinch off" the flow of urine from the bladder so that ejaculant can flow freely.  To not do so, contradicts the progression of evolution.  The uric acid in urine will kill sperm.  That is why there is a pre-ejaculant fluid that flows through the penis prior to ejaculation.  This fluid serves as an anti-septic and "cleanser", clearing the "pathway" through the urethra, making it "safe" for the healthy sperm to travel.
447843
Could just be vaginal discharge (whitish and watery), could be urine, could be sweat. Look at and smell the fluid. If you are unsure, ask your family doctor to help you identify the problem. Good luck!
348148
The yellow is from the breakdown of old blood cells.  It is a compound called urobilirubin and your kidneys pee it out.  If your urine is clear, it is not necessarily a sign that you are well hydrated, but a sign that there is not much urobilirubin in the urine.  Most of the time it's because the urine is dilute by a lot of water, though.
724250
Could be as simple as a bladder infection.  Do you need to urinate often?  Is the urine discolored?\n\nOr it could be something much more serious.  Check with your doctor.
646219
The more plain water one drinks, the lighter the urine becomes, it sounds concentrated.\nIf he drinks about 64 ounces a day, water, nothing else, and it lightens up, that may be the trick.\nIf it continues, he might have blood in his urine.\nWatch, and take the necessary medical precautions!
419290
the sperm is white becuase of seminal fluid, and if you mean diffusions as ejaculation then more sperms will try to fertillise the egg
345320
semen contains lots of vitamin c (Ascorbic acid) and many sperm do die off before they get to the egg. but the females vagina is not full of urine because the urethra opens on the outside not inside the vagina.  i would say that semen is acidic bearing that information in mind
1052517
The color of pee is caused by bile, a chemical the liver produces to break up fat. When our bodies break down bile, the pigment urochrome turns pee yellow. The lighter the color, the more liquid has watered it down. \n\nIn fact, you can easily determine if you're dehydrated from the color of your urine. Dark yellow is a symptom of moderate dehydration and is a sign that you should drink fluids right away. However, taking vitamin supplements can also cause pee to appear yellow. \n\nBelieve it or not, urine's yellow color was once believed to come from gold. Long ago, alchemists attempted to extract gold from pee. Needless to say, they were unsuccessful. However, in 1669, an alchemist named Hennig Brand discovered phosphorus while engaged in the undertaking. Among other things, this find helped to spark the creation of matches. \n\nYou may have asked this question lightheartedly, but for hikers and parents of small children, understanding the significance is important for health and safety.
216208
he might not have ejaculated for a time that makes his sperm thick and gui.  this will make the sperm whiter than usual.
411441
You may be slightly dehydrated.  Drinks fluids especially water. Your urine should be pale yellow normally.
326591
the sperm is the tadpole lookin things and the semen is the stuff that a guy ejaculates. Yes semen definatly gets you pregnant as does the sperm.