Double D, also known as DD is the Designated Driver, or person who can't drink because he has to drive their shit-faced friends home. Often times the Double D shift is rotated amongst a group of friends or a group of friends finds a person desperate for friendship to be the double d.
"Want a beer?"
"Nah man I can't, I'm playing Double D tonight."
by Tony3559 April 02, 2008
A girl with size DD breasts.
I got a double d waitin' at the tree for me.
by jt November 21, 2002
the skinny nerdy kid with a black sock over his head in 'Ed Edd and Eddy' the cartoon show on cartoon network
Eddy: double D, look, jawbreakers!
Edd aka double D: Eddy its too expensive we can never afford it!
Ed: butter toast
by G-G-G-G Faness October 01, 2005
when a girl has a big sized chest.
I have big double d's.
by Stacy May 27, 2006
A breast size that most men seem to believe are enormous basketball tits. In reality, the size of the breast depends on the size of the woman. But they are larger than a handful. Even for people with behemoth hands.
You banged a double d? Her tits must have been huge!

No, actually, they weren't like, the size of my head or anything. But there were larger than a handful, in spite of my behemoth hands.
by Laura!!!!!!!! January 26, 2009
what all girls should have
where are my double d's?
by Pat O'Malley March 20, 2004
Slang for a woman who has huge breasts, refering to the size of her bra: D being the largest size.

"Damn shes got some fine double ds and not to bad of an ass either"
by Anthony Dig. June 17, 2008
1. Huge boobs, often in reference to size "D" cups

2. Cassie Nelson (Though see is the only one who calls herself that, lol)
1. Brad: Look at those huge ass tits!
Joe: Those have gotta be double d's!

2. Cassie: Yeah everyone just calls me double d's
Everyone else: Hey arent you the one who buys 8-balls and goes through them in a day?
by New York, Unknown September 13, 2007

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