This is normal and happens sometimes. It's nothing to be worried about.
No
two oval balls
They are created inside the testicle and housed in the epidymis.
a testicle
Yes
Testicle pain could be something as simple as a bruise, or it could be something potentially dangerous like a torsioned testicle that occurs when the testicle wraps and tangles the various ducts and vessels it is connected to inside the sac.
No, it is not normal for guys to have a testicle getting stuck inside themselves.
It gives them a happy feeling inside a sexual urge
Each teste (or testicle if you prefer) is formed from a mass of tightly wound up narrow tubes (imagine making a ball from lots of elastic bands and you get the general idea). Inside these tubes sperm and the male hormone testosterone are manufactured.
your stupid you shouldnt do that
It could be a tumor, or it could be a vericosele, but it for sure is something to have a doctor look at before it is too late.
You feel closer to your girlfriend after sex because you went inside her and have become one.