an acronym for "we been knew". it basically means that something is common knowledge to you, it's something you've been aware of for awhile.
"you look stunning, wbk wbk" she replied to her friends latest post.
or
"is it true that daniel has been hostile to you recently?" she asked.
"ah, wbk wbk. it doesn't bother me though." he replied.
we back (alternate, but same general meaning as the awkward 'we been knew')
when somebody else finally gets what you knew all along and you get to re-enter society from outcast to elite speaker on all matters pertaining to whatever the fuck we back on this time
*somebody does something (that they do)*
stan: "she just drops hits and hints"