A mix of the words friend and cousin. Someone who is more than a best friend but also family, and someone thats more than just family and also a best friend.
Why do you want to hang out with her isnt she like your cousin?
No shes my Fuzin!
FFL=Fuzins for life
Five Cousins. Enough said.
person 1- Look at those 5 amazingly awesome people!
person2- mate, there fuzins.