A person who reacts negatively when he learns that unmarried persons are engaging in sexual intercourse. Typically used with "old".
Don't tell Bob you slept with me last night, he's an old Fuddy Duddy about that sort of thing and it will ruin his day.
by pamschel December 21, 2006
old fashioned, vintage
That shirt is so fuddy duddy dude!!
by Shant June 30, 2003
A tall, somewhat "ogre-ish" young man who is to the utmost extent, a goofy guy. He is at times a slob, a fiend, and very stubborn. But, he is your good friend, and still manages to keep you laughing.
(you walk down the crowded school hallway and the one head that sticks out of the crowd is your goofy ass friend who seems to be standing around amongst the chaos, zoned out) "Dude man, look at you. your such a fuddy-duddy!"
by felixblolz January 07, 2009
When a couple is having sex, and the girl hasn't reached orgasm yet. The guy cums and feels bad about it, so he keeps going, but he's already starting to get soft.
The sex would've been fine, even if I hadn't had an orgasm, but he just wouldn't give up... It was a total fuddy duddy.
by mkmtrumpeter December 11, 2010
a humble and reserved person who is prone to depression and or alcoholism
"Ben get out and live a little, quit being such a conservative fuddy duddy."
by Jimmy Williams March 20, 2005
An old flaccid penis that is worn out from years of kinky sex and substance abuse.
While passing by his sister's bedroom, Therman overheard his grandfather yelling, "Awwwwww...yeaaah... just keep going you cunt. Suck my fuddy duddy until it's long, hard, and spewing out warm ice cream."
by Hobo Joe Bessinger December 27, 2007
A fat chick who is used as a slump buster or a last resource to have sex with.
"Damn I need a Fuddy Duddy really bad cuz my dick is hittin wind."
by Mr. De La Cruz March 07, 2007

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