The reason why human males have external genitalia is that the production of sperm cells happens more easily at slightly lower temperatures. If the genitals were inside the body, there would be a decrease in fertility, due to over heating.
Common themes would be the shape of the genitalia, the pubic hairs around the area, and the fact that the female genitalia are inside the body.
gall bladder, genitals gall bladder, genitals
Male body feelings are really centered on their genitals. However, the chest and face and neck are also very sensitive. The inside of a guys legs, right next to the genitals, and also rubbing on a guys pubic hair area will certainly give a normal guy an instant erection
The body would die.
Eggs develope inside the body before being layed. If they weren't, the "baby" would be born live. Also, eggs need incubation, meaning a male and female have to share genes before the egg gets "fertilized". If that didn't happen, there would be no egg.
Then your body would no longer exist.
The biggest cell would be the skin, because it is part of the body just not inside and it does not say the biggest cell inside the body so it would be the skin
This cannot possibly happen, so asking what would happen if it did happen is an exercise in stupidity.
The genitals
No body would be jobless.
The thermometer would raise in temperature because the winter coat traps body heat.
You cannot possibly void your colon out of your body. It is too high up inside your abdominal cavity and it is held in place quite securely.