A mixture of okay and then. A fast snippy was to say "okay then..." Useful in situations when you don't know what to say, people are being assholes, or you have no other response.
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.