someone who is a complete failure, dork, or loser. basically a failure at life. it is the ultimate insult. someone who uses nub as an insult after you just insulted them as a nub, definitely is a nub, and if you have to ask what it is, then you are one.
Girl speaks insults another girl...
Rachel: "Amy your such a nub"
Amy: "No your a nub"
This makes Amy a huge nub
used in a sentance
"Isn't Amy Shaughnessy a huge nub?"
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