When you a ginger and you be devouring/deepthroating a chickenbacon and mayo panini. Also you have to be named/nicknamed jammo. Only Jammo's are allowed to eat this fine cuisine.
a jammbox is just a really cool person. it is normally used for people who are not only really cool, but have delicious music taste. females are more often called jammboxes than males.
"Dude I just met this awesome girl and she digsThe Strokes!"
Someone who is described as swaggy, would also be described as a soul lover and namjoon lover. Nobody could compare to a person who is described as a jamnoon.
Person: "Woah they're so jamnoon"
Person 2: "Yeah, they're pretty jamnoon-y"