dd

Really big breats - Double D.

<A> Dam'! That bitch is stacked yo!
<B> She hasta be DD!

dd

designated driver

u dd kid

dd

An acronym for "Dear Daughter." Mostly used by moms in their 40s when they talk about parenting.

Shiloh Jolie-Pitt is Angelina Jolie and Brad Pitt's DD.

dd

Disease and Drug free

Craigslist: I am a DD free female

dd

due diligence (research into all aspects of a certain topic)

Dude #1: "Hey man, should I buy stock in XYZ company?"
Dude #2: "Dude, do your own DD."

dd

1.) Designated Driver
2.) Drunk Driver/Drive Drunk

1.) Joe is the DD tonight so drink all you want.
2.) I'm about to DD my wasted ass home.

dd

Verb. Don't Die, said before an action made by an internet addict.

Dd, you stupid n00bs.