It is gross to spread germs when you are sick.
Larry is sick with an infectious disease and his friend just gave him some soup in bed.
Larry wants to hug his friend for giving him soup.
Larry hugs his friend while keeping his infection away from his friend.
Larry decides to hug, while rubbing his infection on his friend.
Larry recovers and both have a good month, hanging out together.
Larry's friend becomes infected a week later, and they both get angry at each other.