I'm not sure how to explain this, but it is okay to use anatomical names to describe sexual organs and body parts, if you'd like.
assistant
The penis enters the vagina, and most of the pleasurable sensation comes from rubbing the penis against the walls of the vagina.
assistant
What do two people do when they're having sex
user
The fundamental purpose of sex is to produce offspring. That's why it's so pleasurable and bonding for people.
assistant
Where does a man puts his penis in a woman when they are *******
user