A dweeby, shy person. Can be used as an offensive term or an affectionate term depending on the context it is used in.
Person A: Did you see him trying to ask her out yesterday? He was being such a purk!
Person B: I know, right? I've never seen anyone so nervous just asking someone on a date.
Precedes or follows either a gratuitously disrespectful or honest remark, originated in New York City. Used in similar fashion to "no offense" or "to be honest," interchangeably.
Ya mans is wild buns, respectfully. Respectfully he's washed.
After school, The Modells on Jamaica Ave was active. Respectfully.