Do you want a DP?

No, a cup o’ nasty would be a Diet Coke. Diet Pepsi at least tastes like cola. Diet Coke just has a wierd chemical taste.

Not really, it’s a Doctored Pecker.

At first I thought she was asking if I wanted a Domestic Partner. I was like, “No, not really. Well maybe if he cooks.”

I love having a nice DP with my good friends!

Me too–at least if you just asked me what a “DP” was. In the context of a bar, I probably would have assumed he said “DC” for Diet Coke, which is an abbreviation I used to hear commonly.

I like the cut of your jib!

To answer your question, I would not have understood what a “DP” was. I mean, I will now, but I wouldn’t have before now.
Now, If a bartender asks me if I want a DP, I’ll say: “No thanks, do you have any beer?”

Of course it is. Otherwise it wouldn’t be diet.

Yeah, sometimes you need a six pack in you before you feel comfortable with getting DP’ed…

Usually it means the later. For the former, you generally specify the hole in question, ie DA or DV.

I think the bartender at the lunch place started calling Diet Pepsi “DP” when the snickering at tossed salads and spit-roasted chicken grew too predictable.