Gas Sation Attendant(GSA): Didn't you just graduate from college?
Jack: Yes I have a college duh-gree.
GSA: Ah, I see. Ok. You gave me $20...
Jack: Yeah, thats a twenty dollar bill, right?
GSA: ...and you put $16.50 on pump 11.
Jack: Stop. Just give me my change.
2. any obbject of which has no use.
3. the opposite of usefull(also see: feckless).
4. any information distributed/typed/spoken by Gayrab (see example of useless drivel down below).