Unfaedah means unnecessary. It is an Indonesian slang. They borrow the affix un from English and combine with Indonesian word faedah that become unfaedah or unnecessary thing.
A. You should see a doctor with your headache.
B. Ahh..unfaedah advice.
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
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.