system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is my groin tan compared to the rest of my pale skin that never gets any sun?

Answered!
gpt
Okay little Timmy. You asked about a big boy part of the body. That's fine. If you are ready to ask the question then you are  ready to hear an answer.  
  
Remember how red a red balloon is when you first take it out of the package? Remember how it looks much lighter red after you blow it up? That's because the balloon is all squished together before it is inflated and the red seems darker. 
  
Well, the skin on your boy bits are like that balloon. Squished together and they can be streched out where they would look as white as the rest of your skin.  
  
Don't worry about the streching out part until you are older. Right now you are far too young and you could hurt yourself if you pull and strech too much. Later when you are a teenager yo will be able to understand this stuff better. 
  
[***Wow! These 5 year olds are asking the tough ones these days!***]