Everything on this page with regards to origin is BS. This word is a latin phrase, therefore it is as Italian as it is Spanish. I have known this expression since I was a kid and it is used in Spanish very very often, same goes for "Forget about it"
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.