ad placed in the papers by a computer seller in the 80's: learn how to use your wang in three  sessions
a) a very common chinese surname b) an ancient brand of computer systems b) penis, see [dong], [schlong], [dork], [johnson], [cock], [prick], [dick]
"ad placed in the papers by a computer seller in the 80's: learn how to use your wang in three  sessions" What is the definition of "wang"?