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8.
A white powder containing no more than 70% cocaine (benzoylmethylecgonine), with the remaining percent consisting of a non-drug powder such as flour or sugar. This is usually done in order to increase the number of sales you can make while having to purchase less from your supplier. What can occur is that the product keeps getting cut by each dealer that buys it until there is literally no cocaine left in the product.
Example 1: "I'm in deep shit, turns out I bought a pound o' diet coke. I jus gotta hope no-one notices they're snortin' air."

Example 2: "I want to quit cocaine, so I've been buying worse and worse diet coke 'til my body accepts it's just gonna be snortin' flour"
by FriendOfAGinger October 25, 2010
 
9.
a beverage ordered by women who are ona diet after they order SEVERAL MENU ITEMS
i will have a slice of pie and diet coke
by 69 July 23, 2003
 
10.
the most addicting/ best drink in the world.
i can go through a whole 12 pack of diet coke a day! its so good!
by Purple Goat Eating A Mint December 23, 2008
 
11.
A drink that turns you gay.
Penises and Diet Coke, same thing.
by drzimo December 14, 2009
 
12.
something fat people drink because they believe it is good for them and they feel like they are making a good choice in their day.
Claudia always begins her day with a rack of ribs and a diet coke.
by MiChael face July 18, 2011
 
13.
A drink for people who do not like the taste of regular Coca-Cola.

"I'd like a Diet Coke. Regular Coke is too sweet."
by SuzyIL February 22, 2009
 
14.
A girl who is under the legal drinking age, and so must order a soda instead of alcoholic beverage when dining.
Bartender: "What will it be?"
Man: "I'll have a beer, and she will have a diet coke."
by jshwa5 April 15, 2008