SD

Same Day. Used when describing tv ratings - live and same day.

Number of viewers Live+SD.

by cableguytk November 3, 2007

SD

Serious Discussion. Used in the internet forums to describe a thread. It is used to discuss serious topics, not for whoring. In this type of threads generally there is a lot of arguing.

(SD) How many more children must die in schools before america says no to guns?

by morrissey02 April 28, 2007

SD

Acronym for, Slydog
1: someone who gets with sluts when they are already in a relationship.

2: someone who does something on the sly.

Danny I cann't believe you slipped that lass one up the arse when your married. Such a SD you are.

Fucking SD mate, as if you managed to get me 50 condoms without anyone seeig you.

by Dan Bates January 30, 2008

SD

gangsta pimp mother fucker

that stu downie is a sd

by stuart downie September 9, 2003

SD

Sex Doll - A very attractive, small woman that is petite.

"That SD was great last night"

by ilovethecack May 6, 2003

SD

The legendary word originated by Ash.A (666), wins every argument and means ' Somali Donnie' or ' Soap Donkey ', whatever the fuck you want.
Anyways, this is legendary.

Shut up you SD, Ash.
*Drinks bleach*, Somali.

by ashSD March 13, 2019

SD

Sperm Donor
A male whom thinks he's the shit, does not help with the family, most likely 420 friendly, with many DUI's, is having relations with the neighbor women, and thinks your to stupid to figure it out .Also whom actualy thinks the sun rises and sets for him.

Neighbor to woman: "Where's your man?"

Woman: "Oh you mean my SD, prob at the bar or looking for a 40."

Neighbor: "Ok let him know I stopped by"

Woman: "Sure thing Princess"

by MissPriss73 July 10, 2009