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"Drug and Disease Free." this is often found in online personals ads -- especially for casual sex.
"I am 24, 5'10", size 6, pretty, fun, non-smoker, social drinker, love to laugh. I'm looking for a man to play with. Age and weight are not important, just be taller than me, funny and DDF."
by Scooterams October 11, 2005
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2
DDF or Daily Dose of Frank
(Original - Dnevna doza Franje (Croatian))
For when you have a friend in group who just has random outbursts of unrelated, fairly stupid comments or jokes and after a while you become used to it and call such phenomenon - DDF.

It's also appliable for when someone else has stupid remark and you call it DDF in respect to Franjo, the ultimate redneck.
(in original his name is Franjo which is croatian for Frank - and therefore "Daily Dose of Frank")
Out of the blue, unrelated he says something like

Frank: "If someone threatened you with a gun, what would you do? - suck him off"
Everyone: "hahaha, DDF!"
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Original:
Franjo: "da ti neko prijeti s piΕ‘toljom kaj bi mu napravil ? - popuΕ‘il bi mu kurac"
Svi: "Hahaha, DDF!"
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Frank: "Shit on me my pidgeons, shit!"
(Original Franjo: "Serite po meni golubovi moji, serite")
by bloodalpha August 18, 2014
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3
Acronym: Distant Distortion Factor
When a girl looks damn good farther away, but really is a skank whore up close.
aiken - Man, check out that girl.
tommy da cat - Dude, that's a guy.
aiken - shit, ddf
by tommy da cat October 21, 2002
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5
Distance Distortion Factor. When a girl looks hot from a distance but isn't when you get closer.
"Dude, she looks hot"

"Nah mate, it's just DDF. I've been closer and she isn't."
by Josh938393873 March 13, 2016
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6
Dick Don't Fit.
Simple. When a guys dick doesn't fit in a girls pussy cause she's just too tight.
"Babe it's just not going to fit"
"ugh fine DDF"
by Jackson Frosty November 18, 2013
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7
Distance Distortion Function

When a girl is really hot from far away, but when you get closer, u realize dat she aint dat hot! the distance made her hot.
Whoa, dat girl suffers from DDF
by OhFace485 December 11, 2006
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