People who, for personal reasons, refuse to eat organisms with 1 (or more) distinct nucleus. Their diets are restricted to bacteria and archaea, and have significantly reduced life expectancies.
Prokarytarian: Do you have anything prokarytarian on the menu?
Waiter: Um, a salad?
Prok.: No, plants have nuclei.
The use of obscure nouns as an insult, usually aimed at Dan (hence the name). The more obscure the noun, the better. In some exceptions adjectives may be used before the noun, as shown in the last two examples.
A promdate who is merely a decoy to please either set of parents into allowing you to go to prom because they have forbidden you to go with your true love.
So Alicia, I need you to look and act more slutty of you're going to be my bordertown promdate my parents are smart and they know i'm not gonna take a chick who doesn't put out before and after dinner.