It means that what may seem perfect is not all it's hyped up to me. And vice verca.
Take the life of a celebrity for example - It may seem like they live a good life; but in reality they are constantly hounded for autographs and have no privacy.So most people would say " all that glitters is not gold."
From the song "Stairway To Heaven." There's a lady who's sure, all that glitters is gold... so, she believes a falsehood, but one that guides her nonetheless. This is a sardonic or dark spin on the age old saying that "all that is gold does not glitter."
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.