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3.
DNS
Do Not Shag. A an obscure yet fundamental branch of man law usually enforced by friends and other people that have your back.

There are 2 levels of DNS:

Catagory 1: The most common application. Do not sleep with the aforementioned unless drunk and intoxicated, which gives you a ready-made excuse if your friends call you out.

Catagory 2: Indefinite. Any kind of sexual encounter with this person is heavily frowned upon, and is likely to result in ridicule. Designed to stop you from sleeping with a heffer or duff when you're lashed and feeling horny. A person may also be a catagory 2 if sleeping with him/her would cause waay to many problems/trouble, e.g. your best friends boyfriend/girlfriend.
Tom: "I heard becky is coming to the party tonight."

Josh: "As long as you're careful bro, she's a cat. 1 DNS. She only looks good after half a bottle of vod".

Tom: "Don't worry about me dude, i've got this!"

Josh: "Haha, it's all you man."
by Lord Derpington of DerpMoar August 08, 2010
 
1.
DNS
Domain Name Service. Usually a server that runs on port 53 to convert IP names to English words.
64.233.161.99, the class B IP resolves to www.google.com.us. (Note: all domain names end with their country code. ".US" (dot US) is the default domain name for unspecified countries.
by Bob G Midi June 02, 2004
 
2.
dns
Dead nigger storage, as popularized by Quentin Tarantino's Pulp Fiction.
Ain't no fucking DNS here, mang. Better call the wolf.
by Shadey July 17, 2004
 
4.
DnS
(adj, v.) Drunk n Stoned. A discreet acronym to describe a state of mind, or act thereof, of getting shitfaced on alcohol and stoned as balls on weed.
"Torrey can't come to the phone right now, he's DnS."
by Sunset Court April 10, 2014
 
5.
The acronym for Dank Nuggets, however, used more as a word meaning "good," "cool," or "sweet"

1a. Also, it can be modified with new different words, but convey the same meaning. (i.e. DSL=Dank Sausage Links)
Those mashed potatoes your mom made last night were DN's... I was high though, so it was all good.

1a. Did you see that girl's ass? It was straight up DSL!
by Chodermeier October 15, 2007
 
6.
Short for Dense Nuggs. In other words, a highly packed bag of (usually) high-grade marijuana that is not at all fluffy.
"That kid's got some DN's"
by double-a November 25, 2006
 
7.
DNS
Did Not Start. Where one registers for an event, such as a race, but does not compete in said event.
After weeks of training, and even getting to the race venue, having the flu resulted in her being a DNS.
by Hollyfeld June 18, 2004