A half hard boner or chub
Are you hard?” “ No man, I just have a Duffy”
by Funnyguy67890 July 11, 2018
Get the Duffy mug.
Look at that girl who acts like she is friends with everybody, she's hella Duffy.

That girl that flirts with everyone is a Duffy.

"hey man I got you a ticket to the superbowl" "no way you're Duffy."
by Kawruhhh November 12, 2014
Get the Duffy mug.
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 26, 2006
Get the Duffy mug.
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 6, 2006
Get the Duffy mug.
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 11, 2006
Get the Duffy mug.
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
Get the Duffy mug.
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 15, 2010
Get the Duffy mug.