It's a matter of life and death, please help!?

Question

Hi, the biology teacher was talking about pregnancy and masturbation and stuff like that, then my classmate asked him " How does this whole ejaculation work?" and he told us the whole story. I didn't get it though, if the testicles make the sperm and sent it to prostate and then it combines it with a couple of other liquids, my question is, Why in the h**l do my knees and my wrists feel something like their empty or something, i'm sure guys pretty much know the feeling. So please tell me why it feels that way. Thanks for your time

Answer 1

Well its much the same with girls, I am sure and they don't even make sperm......

But in the knees and elbows, I am sure they feel the same....

Answer 2

I dont think it is related to the ejaculation of men....What's the point?...I can't get it...It's ambiguous...