Sound that whistle tips (in mufflers) make, as exhibited by Oakland resident Bubb Rubb.
"This whislte goes Wooo!"
"like woo wooooOO!"
Adj. Desdribing unfavorable traits of character or circumstance stemming from a false or irrational foundation. temporary or permanent.
i.e. Something that sucks and makes no sense.
Orgin - Acronym for Seventh Day Adventists
"Your girlfreind thinks you cheated on her?"
"Yeah shes been pretty SDA lately"