Usually said in conversation when wanting to express emotions of exasperation.
Weirdo: "OMG don't you dare put that on fb.. I look soooo fat! Delete it now! DELETE IT!"
2. someone you can't trust; or someone you dont know
2. even tho im kool wit em, he still a o.b., ya dig?
3. man dem o.b.'s from _______ soft as uFck!