Critical, physocologicaly impared, frightened child that seems unstable but is still loved
Dude, he was so duffy when he saw that kid.
by Snack Cracker May 25, 2006
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noun : Slack vagina, often excretes solid, stinky waste. Often is seen drinking copious amounts of alcohol, then lying about it. A rare species.

One case of this breed of Duffy is known by many in a small area of northern England (Radcliffe). Treat with caution.
by Eflor Mailliw Evad December 10, 2006
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Duffy or ‘Duffball’ as he is better known (apparently it’s because he has only one testicle) is the class joker. He is a complete legend and tells all the best jokes, although most of them are pretty bad. His most commonly used words are wasteman, big-man and Dracula. His most common catchphrase is ‘Glyn is a G’.
Oi, Duffy stop giving me bare jest, your making me skeet in my pants!
by big-man July 06, 2006
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whem someone did something bad/wrong/stupid is when someone "pulled off a duffy"
old man: yall duffed up kids! im calling the cops on you!
bad kid: you duffy *pulls out gun*
by Lohn Fon Bon John June 11, 2014
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Accidentally e-mailing, text messaging, instant messaging, BlackBerry Messaging, Facebook messaging/wall-posting, etc. to an unintended recipient.
Ryan sent an inappropriate email to fellow coworkers, but accidentally CC'd his boss. He pulled a Duffy.

Bro, I was hammered and Duffied my mom last night by sending her a booty-text. FML!
by unclsamiam May 14, 2010
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A word used to describe either;
1) A lesbian
2) A vagina

This derives from the poet 'Carol Ann Duffy' who just happens to be a lesbian
1) Hey Judy, are you after some duffy tonight or what?

2) Cor, i wish i could shove my piece deep into chloe's duffy
by Moorejam March 27, 2009
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