Megums1211, you mom has it down. The sperm and the semen do seperate, somewhat. Seman is so thick and slimy to help it stay in there a little better and to give the guys something to swim through. Almost like a lubracant. However, not everyone that "came" for the party makes it through the bouncer at the door. Some of the sperms don't make it through the cervix or starts swimming in the wrong direction. (down and out). That is why there are so many of the little buggers. Of the ones that make it past the cervix, some get lost in the uterous and don't find the tubes before they expire. So, the strongest little guys are the ones that make it to the finish line. There is absolutely no way to keep it from coming out of you after sex. Not moving for 20 minutes or so helps point them in the right direction. However, after they make it past the cervix, they are on their way and laying down doesn't help anymore. I have found that placing a towel under you after sex to catch what may slip out helps keep the bed/couch/table or what ever you were laying on at the time a little cleaner and allows you to use it to make it to the bathroom so you don't end up with a lot on the carpet on the way. My doctor told me that sex everyday may lower the sperm count a little, but not enough to matter. It actually helps to have an active sex life. The more often you have sex, the more often your man produces more sperm and the little guys are more healty. It only takes one really strong one to make it all the way. Also, alcohol can mutate the sperm and bend their little tails. So, men are not supposed to have more than one or two beers a day at the most if they are trying to conceive. Alcohol doesn't make it impossible to get pregnant, as many drunk college kids will tell you, but it doesn't help the odds. Sorry about the novel I just wrote here.