It's bad to take pictures without getting permission.
Jack was in a restaurant, and Brad Pitt walked in out of nowhere.
Jack wanted to take a photo of Brad.
Jake asks Brad if he can take a photo with him.
Jack takes his phone out and sneaks a photo of Brad while he's eating.
Brad is willing to take the photo since Jake asked nicely.
Brad ends up seeing the photo on social media and feels creeped out.