5 gum

I dont understand what is so good about it and like i understand that its minty and fruity and just good gum but its not like legendary, but dont get me wrong i still like to have a juicy piece of it whenever im stressed or when i am hungry. that leads me to my next point that is chewing gum makes you hungry because you are like teasing you stomach with the thought of food. The question here is can someone please tell me why it is called 5 gum, like why 5 and not like 4,3,2,1 or any of the other number options??