A chub nigga can be known by the kid who's name is like "Chuck". The chub ass "Chuck" child tried to nig around but can't do anything for his life.
The Chub Nigga can often be the weird ass kid who tries to fit in, but does not. You will know one one you see one, they give off that vibe.
An execessively stingy person.
An excesselively miserly person.
Despite common opinion, it does not refer to people with darker skin.
In fact the most well-known niggard was/is white!