A person who is a fan of a
noob. A person is a fan of someone's
work or gaming skills thinking they are a pro without realizing that the person they are a fan of is not actually a pro but a
noob (newbie).
He'
s a foob of John. (This implies John is a
Noob)
He's my foob. (This is implying that person saying this is not very good at
something, a modest way of saying he's my fan.)