Thanks for explaining that your hairyness.
Emma, although it is inserted in. It still has a little way to go before reaching the egg.
To do so, it ‘moves’ itself in the general direction of the egg. thus moving in.
BTW. The female sperm X are stronger better swimmers. Whilst the males Y are weaker.
This is why, a certain sex baby can be achieved by luck and method.
The further the sperm has to travel, the more likely it is, that an X celled sperm fertilises the egg.
This can be achieved both by shallow ejaculate release or by fertilisation at the beginning of the monthly cycle. When the egg is further down the tube) Or both.
Also because the X is stronger, they survive longer in a warm environment. So tight undies and even lycra can lead to female offspring.
So there you have it. Cyclists with small penis’s a slack GF/wife and perfect timing, can result in a girl.
HTH
