The worst word in the English language, jejune just bleeds pomposity and snobbery. If you seriously use jejune in a sentence you a) are automatically an asshole and b) should be slapped across the mouth.
"I detected a jejune air that had not irked me before."- Brideshead Revisited
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.