(this is not inappropriate. I just know science and you need to also learn!) (Learned this from Zack d. Films)
You were just a little sperm with 1 Billion other sperms (Brothers and sisters). Just waiting to be realized, and race to the Egg cell. You finally got released with other sperms, Now you start racing to the egg cell that will make you see the world. Ofcourse you start at the first obstacle. The healthiest sperm is alive but the unhealthy sperm isn't. So other sperns die, because of an acidic environment, Next obstacle you will face a bigger problem. Because the giant cells will regard you as a foreign Invader and attack you violently. So you have to take advange of the fact that 10 millions of Brothers and sisters (Other sperms) Have been eaten and ran away. Next obstacle course is that you will face a bigger problem. You have to choose which side has the Egg Cell you're supposed to race too. Left or right? (Obviously right. But you don't know that yet) then you will see the Egg cell. There is a layer of transparent tape on the egg, it can't be penetrated by your own. So your Brothers and sisters will work as a team.. you the smart one. You will use the fastest Speed to get inside the egg. Then you finally become a zygote.. then some chemical substance that will not let Brothers and sisters penetrate the egg and they which all Brothers and sisters die.
But all that still didn't happen yet. It was just a sneak peek. So you were still waiting to be released. You can ask your brothers and sisters some facts and tips. (Yes I know sperms don't talk but just imagine they can talk alright?)
Sperm 1: "I can't wait to beat you all in a race! I'll be a future billioner!"
Sperm 2: "Don't get your hypes up."